What is an astronomical unit or AU?
A)
A unit of time equal to one light year or 6 trillion miles.
B)
A unit of distance equal to the average distance from Earth to the Suntor
93 million miles.
A unit of distance equal to the size of the Milky Way Galaxy or 100,000
light years across
D)
A unit of time that is equal to the amount of time it takes light to travel
from the Sun to Earth,
Answers
Answer:
B
Explanation:
The correct option should be B.
The Astronomical Unit, AU, is a measurement unit for length in general astronomy and represents the mean or the average distance of the sun from the earth.
Mathematically, in astronomy,
1 astronomical unit = 150,000,000 km
But then, 1 km = 0.621371 mile
Hence,
150,000,000 km = 150,000,000 x 0.621371 miles
≈93,000,000 miles
Therefore, 1 astronomical unit can also said to be approximately equal to 93,000,000 miles.
The correct option is B
Related Questions
how have plants transformed the world? question 9 options:all answers are correct.food source for many animals, fungi, and even some prokaryotes and protistsphotosynthesis provides oxygen for aerobic respiration to make atphabitat for breeding, rearing young, and escaping predators
Answers
Plants have had a tremendous impact on the Earth's ecology and its inhabitants. They have transformed the world in ways that are both profound and essential to life. Here option D is the correct answer.
Plants have transformed the world in countless ways, but three major ways stand out: providing a food source for many organisms, producing oxygen through photosynthesis, and providing a habitat for various species.
Firstly, plants have played a crucial role in the food web. They are the primary producers of organic matter, which is consumed by herbivores and then passed on to carnivores. The energy stored in plants supports the vast majority of ecosystems and their inhabitants. This includes humans, who rely on plants directly or indirectly for food, medicine, and other resources.
Secondly, plants produce oxygen through photosynthesis, a process that converts sunlight, carbon dioxide, and water into organic matter and oxygen. This oxygen is critical for aerobic respiration, the process by which organisms generate ATP to power their metabolic processes. Without plants, the atmosphere would lack the oxygen required to support aerobic life as we know it.
Lastly, plants provide a habitat for many species, from tiny insects to large mammals. They offer shelter, breeding grounds, and food for these organisms. Additionally, plant cover helps to prevent soil erosion, maintain water quality, and regulate the local climate.
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Complete question:
How have plants transformed the world?
A. By providing a food source for many animals, fungi, and even some prokaryotes and protists.
B. Through photosynthesis, providing oxygen for aerobic respiration to make ATP.
C. By providing a habitat for breeding, rearing young, and escaping predators.
D. All of the above.
Which of the following aspects of water quality is related to changes in weather patterns and circulation of water in the oceans?
Agricultural runoff
Heavy metals in water
Acidification
Salinity and temperature
Answers
Answer:
Sanity and Temperature
Explanation:
They both determine the density of ocean water and density influences the circulation.
Answer: Salinity and temperature
Explanation:
eliminating invasive plants and replacing them with native plants is one aspect of
Answers
Eliminating invasive plants and replacing them with native plants is one aspect of urban management.
When a forest is cut down or destroyed, the best reforestation practices call for immediate planting. According to regulations issued by governments in numerous nations, companies that cut down trees are required to reestablish the equilibrium by planting new trees after logging.
Animals and plants from other parts of the world that don't belong in their new environment are known as invasive species. Ship ballast water, accidental release, and most frequently, people can all introduce them to an area.
The rapid expansion of cities and towns, also known as urban sprawl or suburban sprawl, is often characterized by low-density residential housing, single-use zoning, and an increased reliance on the private automobile for transportation.
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Look at the tooth above. Which animal below has teeth similar to the tooth above?
A.
Y
B.
X
C.
Z
D.
W
Answers
Answer:
W
Explanation:
Consider a major change in environment if there is not organism in a population have traits that allow them to still continue to survive and reproduce what would happen in population ?
Answers
Answer:
See the answer below
Explanation:
If a major change happens in an environment and there is no organism among the population of organisms in that environment that have traits that allow them to continue to survive despite the change, it means that all the organisms within the population will be wiped out by the change.
Survival genes allow organisms to adapt to changes within their environment. Without these genes, any change to the environment would lead to the death of the organisms. Hence, if the entire population lacks survival/adaptive gene to counter a particular change in the environment, it means they will cease to exist in that environment.
The main goal of photosynthesis is to produce what?
Answers
Answer:
To spread carbon dioxide and oxygen.
Explanation:
Plants produce carbon dioxide and oxygen. This is called photosynthesis.
Which of the following is not one of the two main systems of plants?
Answers
Question:
Solution:
Remember that a vascular plant consists of two organ systems. These two organ systems are:
Shoot system: includes the aboveground vegetative portions (stems and leaves) and reproductive parts (flowers and fruits).
Root system: supports the plant and is usually underground.
So that, we can conclude that the correct answer is:
VASCULAR SYSTEM.
Volume-
1. A is greater than b
2. Less than b
3. Same than b
And the reason:))
Please no links I just want to go to bed
Answers
Answer:
A is greater than b,,,,,
Answer:
A is the answer to your question
Explanation:
because it has more atoms
Uide Questions:
1. Based on the Punnett square, how many of the offspring may be
short-haired offspring? Long-haired?
2. Will there be a pure breed (homozygous)short haired offspring in the
cross? Justify your answer.
Answers
1. Based on the Punnett square, the number of short-haired offspring and long-haired offspring can be determined by counting the respective combinations of alleles.
2. There is a possibility of pure breed (homozygous) short-haired offspring in the cross if both parent organisms contribute the short-haired allele.
1. Based on the Punnett square, we can determine the potential number of short-haired and long-haired offspring. Let's assume that "S" represents the dominant allele for short hair and "s" represents the recessive allele for long hair. If both parents are heterozygous (Ss), the Punnett square would look like this:
S s
S SS Ss
s Ss ss
From the Punnett square, we can see that there are three possible genotypes: SS, Ss, and ss. The SS and Ss genotypes correspond to short-haired offspring, while the ss genotype corresponds to long-haired offspring.
Therefore, based on the Punnett square, 75% of the offspring (3 out of 4) may be short-haired, while 25% of the offspring (1 out of 4) may be long-haired.
2. There will not be a pure breed (homozygous) short-haired offspring in this cross. A pure breed (homozygous) short-haired offspring would have the genotype SS. However, in the given cross, both parents are heterozygous (Ss). This means that each parent carries one copy of the dominant allele (S) and one copy of the recessive allele (s).
When the parents are crossed, the possible genotypes of the offspring are SS, Ss, and ss. As we can see from the Punnett square, the genotype SS is not possible as there is no parent that contributes the recessive allele (s) to create a homozygous short-haired offspring.
Therefore, all the short-haired offspring in this cross will be heterozygous (Ss), carrying one copy of the dominant allele (S) and one copy of the recessive allele (s).
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Describe the effect succession has on genetic diversity
Answers
Answer:
Affects gene flow, dispersal diversity and genetic density
Explanation:
Changes in the natural and management-driven disturbance regimes affects the spatial population dynamics and hence will influence population connectivity.
The impact of habitat change on genetic diversity are derived by changes in
a) Dispersal of genetic diversity
b) population density
c) Both genetic diversity and population density
Subsequent habitat succession leads to
a) Increase of resistance to gene flow
b) Decrease of dispersal diversity
c) Decrease of genetic diversity
A population of lizards lived in an ecosystem that was prone to flooding. After many generations, most of the lizards in the population had
longer legs than their ancestors, which helped them flee from floods. Which statement best explains this change?
A: the lizard genes spontaneously mutated to address the flooding threat
B: Genetic variation among lizard limbs allowed for natural selection to occur
C: The limbs were artificially selected because humans probably caused the flooding
D: The lizards with longer limbs cloned themselves, ensuring survival of the species
ILL MARK BRAINIEST PLS HELP
Answers
Answer:
B
Explanation:
Adaption occurs though natural selection and genetic variation
B: Genetic variation among lizard limbs allowed for natural selection to occult
Transcribe and translate the normal and stickle cell dna
Answers
A transcribed and translated normal DNA includes:
CC GAA GAA AAA, Pro Glut Glut LysSickle cell DNA:
CCC GUA GAA AAA,Pro Val Glut LysWhy does sickle cell exist?Sickle cell disease is a hereditary illness caused by a gene deficiency. A situation where two genes, from both mother and father, are inherited a person will be born with sickle cell disease. if an individual receives only one gene they are considered healthy and also a "carrier" of the disease.
Scientists believe the sickle cell gene emerged and faded multiple times in the population until being firmly entrenched when a particularly lethal type of malaria migrated from animals to people in Asia, the Middle East, and Africa.
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The similarities between protein synthesis and cell division
Answers
One of the similarities are that both involve the duplication of genetic material: In protein synthesis, DNA is transcribed into mRNA, which is then translated into protein.
What are other similarities of these fundamental processes?Protein synthesis and cell division are two fundamental processes that occur within cells. Similarities between protein synthesis and cell division include:
In cell division, DNA is replicated before cell division, ensuring that each daughter cell receives a complete set of genetic material.Both require the use of enzymes: Enzymes are essential for both protein synthesis and cell division. Both involve the use of energy: Both protein synthesis and cell division require energy.Learn more on cell division here: https://brainly.com/question/796780
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Explain one hypothesis that explains why the Earth’s magnetic field periodically reverses.
Answers
Answer: Since the forces that generate our magnetic field are constantly changing, the field itself is also in continual flux, its strength waxing and waning over time.
Explanation: This causes the location of Earth's magnetic north and south poles to gradually shift, and to even completely flip locations every 300,000 years or so.
true/false. all species have a tolerance limit before they are no longer well suited to live in their environment. in three to five sentences, discuss the potential outcomes for a population when that limit is reached. there are at least four possibilities, and one point will be assigned per potential outcome mentioned.
Answers
The statement "all species have a tolerance limit before they are no longer well suited to live in their environment. in three to five sentences, discuss the potential outcomes for a population when that limit is reached. there are at least four possibilities, and one point will be assigned per potential outcome mentioned. " is true.
1. Adaptation: Species may evolve over time to better tolerate the changes in their environment, increasing their tolerance limit and allowing them to continue living in that habitat.
2. Migration: If the environment becomes inhospitable, species might migrate to a new area with conditions more suitable for their survival.
3. Population decline: As the tolerance limit is reached, some individuals may not survive, leading to a reduction in the overall population size.
4. Extinction: If the tolerance limit is exceeded and the species cannot adapt or migrate, the entire population may perish, resulting in extinction.
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Question 3 of 10
What is immigration?
O A. When animals die in an ecosystem
O B. When animals are born in an ecosystem
O C. When animals move into an ecosystem
O D. When animals leave an ecosystem
SUBM
Answers
Answer:
the answer to your question is is c.
Which of these actions is an unsustainable practice?
A. Expanding the amount of fossil fuels extracted from an area
о B. Selling locally caught fish in a local market
C. Selling extra carbon credits on an international carbon market
D. Limiting the number of fish harvested in an area
Answers
A. Expanding the amount of fossil fuels extracted from an area is an unsustainable practice. This action can lead to depletion of nonrenewable resources, environmental damage, and contribute to climate change.
What is Carbon Market?
A carbon market is a system where companies and governments can buy and sell carbon credits, which represent the right to emit a certain amount of greenhouse gases. The goal of a carbon market is to reduce greenhouse gas emissions by creating a financial incentive for entities to reduce their carbon footprint. Entities that emit fewer greenhouse gases than their allotted amount can sell their unused credits to entities that exceed their allotted amount. Carbon markets can be regional, national, or international in scope. The largest carbon market is the European Union Emissions Trading System (EU ETS), which covers more than 11,000 power stations and industrial plants in 31 countries.
An unsustainable practice refers to an activity or behavior that is harmful to the environment and cannot be maintained over a long period of time without causing damage. The correct answer to the question is A, expanding the amount of fossil fuels extracted from an area. The reason for this is that the extraction and burning of fossil fuels contribute to climate change and environmental degradation, and their use is not sustainable in the long run.
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Ritchie was investigating different types of cells. He read how long dendrites of this cells enable it to send and receive messages quickly.
A. a red blood cell
B. A muscle cell
C. A nerve cell
D. A heart cell
Answers
what factors are responsible for increasing the size of a population?
Answers
Answer:
Economic development
Explanation:
1. Natural increase: This refers to the difference between the number of births and the number of deaths in a population. If the number of births is greater than the number of deaths, the population will grow.
2. Immigration: If people move into a population from other areas, it can contribute to population growth.
3. High fertility rates: A high fertility rate, or the average number of children a woman has during her reproductive years, can also contribute to population growth.
4. Increased life expectancy: If people are living longer due to advances in medicine and public health, the population will grow.
5. Changes in social norms: Changes in social norms, such as the acceptance of smaller families, can also impact population growth.
It's worth noting that population growth is not always a positive thing, as it can put strain on resources and the environment. Some countries have implemented policies to encourage smaller families and slow population growth.
Pls award brainliest!
Help help help. Please be 100% sure of your answer. Thank you :-)
Answers
Answer:
The answer is D: Amino Acids
Explanation:
Please mark this as brainiest answer, Thank you
Planets with atmospheric ________ are warmer than those without.
A. air
B. gases
C. dust
D. temperatures
I think it's either A or B, but I'm not sure.
Answers
Answer:
The answer is B; Gasses
1/. In the________(LYTIC PATHWAY / LYSOGENIC PATHWAY) of bacteriophages, the virus initiates its replication process and eventually produces enough viral particles to cause its host cell to burst. In the _________(LYSOGENIC PATHWAY/ LYTIC PATHWAY) of bacteriophages, viral DNA is integrated into the host's chromosome and replicates with the host until the integrated DNA is reactivated and viral particle replication initiates.
2/. Of the protists, cells of a________(unicellular organism / multicellular organism / colonial organism) live together and behave together in an integrated fashion, but remain self-sufficient. In comparison, the cells of a________(unicellular organism / multicellular organism / colonial organism) have a division of labor and rely on one another for survival.
3/. Binary fission is a prokaryotic mechanism of ______(sexual / asexual) reproduction that yields two equal-sized,_________(genetically distinct / genetically identical) descendant cells.
4/. The experiments of Stanley Miller and Harold Urey tested whether ________(heat / LIGHT / electricity ) could trigger the formation of simple organic compounds from _________(a mixture of gases mimicking the modern Earth atmosphere / a mixture of complex organic compounds / a mixture of gases mimicking the early Earth atmosphere)
Answers
In the LYTIC PATHWAY of bacteriophages, the virus initiates its replication process and eventually produces enough viral particles to cause its host cell to burst.
In the LYSOGENIC PATHWAY of bacteriophages, viral DNA is integrated into the host's chromosome and replicates with the host until the integrated DNA is reactivated and viral particle replication initiates.
Of the protists, cells of a COLONIAL ORGANISM live together and behave together in an integrated fashion, but remain self-sufficient. In comparison, the cells of a MULTICELLULAR ORGANISM have a division of labor and rely on one another for survival.
Binary fission is a prokaryotic mechanism of ASEXUAL reproduction that yields two equal-sized, GENETICALLY IDENTICAL descendant cells.
The experiments of Stanley Miller and Harold Urey tested whether ELECTRICITY could trigger the formation of simple organic compounds from A MIXTURE OF GASES MIMICKING THE EARLY EARTH ATMOSPHERE.
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Which describes vestigial structures and how they relate to evolution?
Snakes have tiny internal hind leg bones, indicating that they likely descended from lizards.
Humans and dogs have similar bone structures in their forelimbs, indicating a common ancestor
Dolphins and birds have structures that are adapted for swimming, but the structures did not evolve the same way.
The DNA of mice and chickens shows similar patterns, suggesting that the two species are related
Answers
Answer:
The correct answer is - Snakes have tiny internal hind leg bones, indicating that they likely descended from lizards.
Explanation:
Minimal structures are the structures in a life form which are not, at this point being used. In past these minimal structures played out some significant capacities in those life forms however bit by bit because of development now they have become non utilitarian in their body.
Reptiles and snakes both are reptiles yet reptiles have a practical rear appendage which causes them in slithering, snakes have been developed from reptiles however so as to move they creep instead of creeping so their rear appendage doesn't serve any capacity in development. Rear appendages are available in their body as a minimal organ.
Thus, The correct answer is - Snakes have tiny internal hind leg bones, indicating that they likely descended from lizards.
Answer: Snakes have tiny internal hind leg bones, indicating that they likely descended from lizards.
Explanation:
E d g e n u i t y Cumulative Exam 2020
Which process can occur in both mitosis and meiosis?
Answers
DNA replication and condensation, nuclear membrane degradation, spindle formation, chromosomal segregation and nuclear reformation.
ExplaAnswer:nation:
Answer:
Gene mutation
Explanation:
Mutations are changes in the DNA strand that are capable of being inherited.
List three ecological roles of prokaryotes
Answers
Answer:
Nutrient cycling; Symbiotic relationships; Production of oxygen.
Explanation:
Prokaryotes play a vital role in nutrient cycling by decomposing dead organic matter and recycling nutrients back into the ecosystem. They are involved in the breakdown of complex organic compounds, such as cellulose and lignin, which cannot be broken down by other organisms.Prokaryotes are involved in symbiotic relationships with many other organisms. For example, some prokaryotes live in the guts of animals and help break down food, while others live in the roots of plants and help fix nitrogen from the atmosphere. Some prokaryotes are also involved in mutualistic relationships with other organisms, such as lichens.Prokaryotes are the primary producers of oxygen on Earth. Photosynthetic prokaryotes, such as cyanobacteria, are responsible for generating a significant portion of the oxygen in our atmosphere through the process of photosynthesis. This oxygen is essential for the survival of many other organisms, including humans.A study conducted for the Trybow chicken company in 2000 proved that chickens receiving antibiotic treatment do not harm those who eat it. The data was collected from a sample of 3 chickens and was conducted by a company that is not licensed in conducting animal testing. All of the other studies found in scientific journals prove that antibiotics used to treat chickens are harmful to human beings that eat it. Evaluate how credible this data is using 4 of the criteria presented in the chapter. Make sure to present it in a bullet point format.
Answers
Here are four criteria that can be used to evaluate the credibility of the data presented in the study conducted for the Trybow chicken company in 2000:
Sample size: The study only included 3 chickens, which is a very small sample size. A larger sample size would be needed to draw reliable conclusions about the effects of antibiotic treatment on chickens.Source of data: The data was collected by a company that is not licensed to conduct animal testing, which raises questions about the reliability and validity of the data. It is important to use data collected by trained and qualified professionals to ensure the validity and reliability of the results.Methodology: The study did not provide any information about the methodology used to collect the data or to analyze the results, which raises questions about the validity and reliability of the study. A well-designed study should include a clear methodology that is explained in detail.Conclusion: The study concluded that antibiotics used to treat chickens do not harm those who eat it, but this conclusion is contradicted by other studies that have found that antibiotics used in animal agriculture can harm human health. It is important to consider the consensus of scientific evidence when evaluating the credibility of a study.Learn more about credibility Visit : brainly.com/question/24266723
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Which of the following muscles perform both elevation and depression?
A. Pectoralis minor
B. Serratus anterior
C. Rhomboids
D. Trapezius
Answers
The muscle that performs both elevation and depression is the trapezius.
The trapezius muscle is responsible for various movements of the scapula (shoulder blade). It has three parts: the upper fibers, middle fibers, and lower fibers. The upper fibers elevate the scapula, while the middle and lower fibers depress it. This allows the trapezius to perform both elevation and depression of the scapula, depending on which part of the muscle is activated. The other muscles listed, such as the pectoralis minor, serratus anterior, and rhomboids, have different functions and are not directly involved in both elevation and depression.
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Once you’ve decided on your three organisms, the next step is to ask questions about the characteristics of the organisms you chose. This step will help you complete the Venn diagram. Here are a few questions to help you:
How many stages are present in the life cycles of these organisms?
Does a metamorphosis occur during their life cycles?
How do these organisms gain energy for their growth?
Where do these organisms live on Earth?
Can these organisms move freely?
What type of reproduction do these organisms have?
Are the organisms genetically identical or different from their parents?
Do these organisms produce many or few offspring at one time?
What other specialized structures or reproductive strategies do these organisms have?
life cycle: an organism’s stages of growth and development that lead to the production of offspring
Write down two additional questions you’ll research.
URGENTT
Answers
Could you kindly type me the following please:
Materials and methods explain how the work on 'Soil management' (in agriculture) was done.
(Containing sufficient detail to allow another competent worker to repeat the work.)
Answers
In soil management in agriculture, the materials and methods used should be described in sufficient detail to allow another competent worker to replicate the work.
This typically includes information about the materials used, such as the type of soil, fertilizers, and amendments, as well as the methods employed, such as tillage practices, crop rotation, and irrigation techniques. Additionally, the time frame, location, and any specific measurements or data collection procedures should be included. By providing these details, the process of soil management can be accurately replicated by others in the field.
Adding organic matter, such as compost, manure, or cover crops, improves soil structure, water-holding capacity, and nutrient content. Organic matter also enhances microbial activity in the soil, promoting nutrient cycling and overall soil health. Conservation tillage practices minimize soil disturbance and erosion by reducing or eliminating plowing or intensive tilling. This helps preserve soil structure, moisture, and organic matter, while also reducing fuel and labor costs.
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Which of the following methods will usually cause a reaction to speed up?
Answers
needs to be more specific for someone to answer