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Related Questions
Over a six-year period, a biologist has collected data about the physical characteristics, behavior, feeding habits and mating rituals of four bird species living in a South American rainforest. At the end of the six-year period, the biologist claims that evidence of evolution is present in two of the four species. Which of the following is most likely to occur when the biologist presents these findings to other scientists?
Answers
Answer:
C Scientists will debate and seek confirmation through additional research prior to accepting the findings as fact.
Explanation:
When a biologist presents evidence of evolution in two of four bird species living in a South American rainforest, it is likely that other scientists will engage in a critical evaluation of the data and conclusions.
What is the importance of evidence?Scientists may ask questions about the methods used to collect and analyze the data, and may also examine the data themselves to determine the validity of the conclusions. They may also compare the data with other studies and consider alternative explanations for the observed changes in the two species.
Ultimately, the goal of this process is to determine whether the evidence supports the conclusions about evolution in the two bird species. If the evidence is found to be sound and the conclusions are supported, the findings may be published in a scientific journal and become part of the scientific literature. However, if the evidence is not robust or the conclusions are not supported, the findings may be revised or rejected.
In conclusion, the presentation of the findings is likely to lead to a critical evaluation and scientific discussion among other biologists, which can help to establish the validity of the evidence and conclusions about evolution in the two bird species.
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Plants and some bacteria use the suns energy to carry out photosynthesis and are therefore the foundation of all living systems
Answers
Answer: Yes, that is correct.
Explanation: Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of organic compounds, such as sugars. This process is important because it is the primary way that energy is converted from the sun and is made available to other organisms in the food chain. Without photosynthesis, life as we know it would not exist.
Why are Sunlight and nutrient levels asexual
Answers
Answer:Sexual reproduction allows them to produce fit offspring that can survive under stressed environmental condition
Explanation:Reproducing sexually and asexually allows fungi to adjust as per the environmental condition.
When the conditions are favorable, they reproduce asexually and increase their number but when the condition are not favorable and environmental selective pressure occur then they undergo genetic variation through sexual reproduction to produce a stable and fit offspring that could survive under stressed condition with limited resources.
Asexual reproduction Since there are plenty of resources, the plant will want to reproduce quickly and colonize the area
Which class is a lever with the fulcrum located between the effort and resistance?
Answers
A class 1 lever has the fulcrum positioned between the effort and resistance, allowing for the amplification of force or the achievement of balance.
The class of lever with the fulcrum located between the effort and resistance is called a class 1 lever. In this type of lever, the fulcrum is positioned in the middle, with the effort applied on one side and the resistance on the other. Class 1 levers are commonly seen in tools such as seesaws and crowbars. They can be used to amplify force or achieve balance. When the effort is applied closer to the fulcrum than the resistance, a mechanical advantage is gained, allowing a smaller effort to move a larger resistance. On the other hand, if the effort is applied farther from the fulcrum, a mechanical disadvantage is created, requiring a larger effort to move a smaller resistance.For more questions on force
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which of the following most closely resembles cellular respiration
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Logs burning in a campfire are the circumstances that most mimic cellular respiration. This is due to the fact that both processes release energy and depend on oxygen to continue. The body uses cellular respiration, a series of metabolic events, to liberate energy from food.
what is respiration?This is the process of breathing; the taking in and exhaling of air. Biology. the whole of the physical and chemical mechanisms that transport oxygen to tissues and cells and release carbon dioxide and water during oxidation in an organism.
what does metabolic events?It is absolutely necessary for an organism to preserve its life for a process known as metabolism to take place in its body. These activities, which include anabolism and catabolism, are also known as metabolic processes.
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2. Explain how engineering advances have led to scientific discoveries about the moon.
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Answer:
Explain two ways that all youth can idenblases in the media
If you divide the distance a car traveled by it's time of travel , you will calculate its
Answers
Answer:
speed
Explanation:
speed = distance ÷ time
distance = speed × time
time = distance ÷ speed
A postsynaptic neuron has an RMP of -70mV and a typical threshold of -55mV. It has three presynaptic inputs-from neurons X, Y, and Z. Stimulation of
neuron X causes the postsynaptic neuron to depolarize by 0.5 mV. When X and Y are stimulated simultaneously, the postsynaptic neuron depolarizes by
1 mV, If X fires 10 times and Y fires 10 times the result will be …
Multiple Choice
a subthreshold summation.
presynaptic inhibition.
threshold is reached and an AP is fired.
many APs are fired.
the membrane depolarizes.
Answers
When X fires 10 times and Y fires 10 times, the result will be a subthreshold summation.
Subthreshold summation happens when two or more presynaptic inputs that are sub-threshold (i.e., they cannot create an action potential) combine their effects on the postsynaptic neuron.
Here, the postsynaptic neuron has an RMP of -70mV and a typical threshold of -55mV. When neuron X is stimulated, it depolarizes by 0.5 mV.
When X and Y are stimulated simultaneously, the postsynaptic neuron depolarizes by 1 mV, which is sub-threshold (below -55mV).
Therefore, when X fires 10 times and Y fires 10 times, the postsynaptic neuron will experience subthreshold summation and no action potential will be fired.
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hypothesis why parts of a plant such as the leaves are green but other parts such as the roots are not
Answers
Answer:
Because roots get more water then the stem does, it absorbs at least 60% of the water, and if you use a nail that goes into water, it rusts, so that means that it's darker than others.
Explanation:
If you take a nail and place it under water, that means its getting 100% of the water, so it's the same thing with plants. Another reason that this is happening is that its a sign that a plant is unhealthy. So make sure to give it a lot of water( but not too much or it will drown) so it stays a healthy and happy plant. Hope this helps :3
what structure does the hard and soft palates separate the mouth from?A. nasal cavityB. body midlineC. glottisD. epiglottis
Answers
Question: what structure do the hard and soft palates separate the mouth from?
Solution (explanation):
Remember that the palate is a structure that forms the roof of the mouth. It is divided into two separate parts, namely, the hard palate and the soft palate. The hard and soft palates separate the mouth (oral cavity) from the nasal cavity.
Answer: we can conclude that the correct answer is:
A. Nasal cavity.
Simulated number of birds in flock for 2nd generation
Answers
The Simulated number of birds in flock for 2nd generation is given in the table below.
Total Pieces Food Percentage Simulated Number of Birds
of Food Eaten in Flock for 2nd Generation
Flock X 57 19% 6
Flock Y 153 51% 15
Flock Z 90 30% 9
What is 2nd generation of crossing?The offspring of any bird is said to be produced due to the work of crossing two birds that are known to belong to the first generation and this often constitute the second generation.
Note that if two first generation red birds and blue pods were said to be crossed, the birds with red pods and plants with blue pods will appeared in the second generation in the ratio of 3:1.
The Food percentage is:
Flock X = 57/300 x 100% = 19%
Flock Y = 153/300 x 100% = 51%
Flock Z = 90/300 x 100% = 30%
Simulated Number of Birds in Flock for 2nd Generation will be;
Flock X = 19% x 30 = 6
Flock Y = 51% x 30 = 15
Flock Z = 30% x 30 = 9
The Simulated number of birds in flock for 2nd generation is said to be dependent on the amount or the outcome of the cross between flocks of the first generation.
Hence, the second generation will be:
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See full question below
Flock X Flock Y Flock Z Total Pieces of Food Eaten 57 153 90 Food Percentage* % % % Simulated Number of Birds in Flock for 2nd Generation** * Divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** Multiply the food percentage for each flock by the total number of birds (30).
Banded snails have thrived as a species because of variability. They are found in a variety of colours, including brown and yellow. Explain how the colour of the shell has allowed the species to be so successful. Be specific.
How does variation in the individual members of a species contribute to the survival of the entire species?
A population of goats lives on a mountaintop. Half of the goats have an adaptation to extreme cold, while the other half only have an adaptation to extreme heat. If there is a sudden snowstorm, what will the next generation of goats be likely to have an adaptation for? Explain.
Answers
If there is a sudden snowstorm, then the next generation of goats likely will have an adaptation to extreme cold, because natural selection acts on phenotypes immersed in particular environmental conditions.
What is the evolutionary significance of adaptive phenotypes?The evolutionary significance of adaptive phenotypes is based on the matter that they will be selected in a particular environment through the mechanism of natural selection.
Therefore, with this data, we can see that the evolutionary significance of adaptive phenotypes is the process of selection they undergo under specific environmental conditions.
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fossils at used to determine what
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Answer:
fossils are used to tell how long they lived what did they eat how they died habitat what they eat
Explanation:
The fossils present in a rock exposure or in a core hole can be used to determine the ages of rocks very precisely. Detailed studies of many rocks from many places reveal that some fossils have a short, well-known time of existence. These useful fossils are called index fossils.
Answer:
Fossils have been used by scientists to determine the dates of rock layers (or strata) that were laid down in succession hundreds of years ago. However, the accuracy and precision of this method depend on several conditions, such as depth, lithology, thickness and abundance of the fossils in that rock.
Explanation:
Are viruses living organisms? Why or why not?What do viruses do?List any names of viruses that you are aware of. Try for four or more.
Answers
Viruses are not living organisms. They do not possess the one of the three principles of a living thing. They cannot replicate on their own. They need host organism to be capable for reproduction.
Which statement BEST describes how daughter cells retain the correct number of chromosomes during meiosis?
А
During Prophase I, crossing over occurs with overlapping tetrads.
B
During Metaphase I, sister chromatids line up in the middle of the cell.
ООО 0
С
During Anaphase 1, homologous pairs of chromosomes are separated towards opposite poles.
D
During Telophase I, a nuclear membrane forms over each set of chromosomes.
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Answer:
D
During Telophase I, a nuclear membrane forms over each set of chromosomes.
Explanation:
PLEASE HELP!! 70 POINTS!!!
Explain how DNA is involved in creating genetic variation within a species. Is this considered a mutation, if so why?
Answers
Answer:
different strands creates different human characteristic
a question was asked by a teacher to a student. She gave the student a jumbled word and told him to make words out of it. The jumbled word is gzeysktqix. Now you know what to do. see ya!
Answers
Here are some words that can be made from the jumbled word "gzeysktqix":
gazeskiquiztaxizigzagkickskeyzigskygetHow are words formed from jumbles of letters?Words are formed from jumbles of letters by rearranging the letters in a way that creates a valid word in the English language. There are a few different ways to do this.
One way is to use a dictionary. A dictionary lists all of the words in the English language, along with their definitions. By looking up the jumbled letters in a dictionary, you can find out if they form any valid words.
Another way to form words from jumbles of letters is to use a word unscrambler. A word unscrambler is a software program that can help you unscramble jumbled words.
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write down the steps of double fertilization
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Steps of Double Fertilization.
It was discovered by S.G. Nawaschin (1897) Lilium are Fertillaria sps.1. Germination of pollen on stigma :
(i) By absorbing secretion of stigma pollen swells up and outer layer exine ruptures whereas inner lintine comes out in the form of pollen tube.
(ii) Branched polen tube is formed in amentiferae group.
(iii) In families malvaceae, cucurbitaceae, etc. polysiphonous condition (many pollen tubes from a single pollen) is found.
2. Path taken up by pollen tube :
(i) Pollen tube pierces through stigmatic papilla into the tissue of style.
(ii) Filiform apparatus of synergids secrete some chemotropically active substances, which promotes porogamy.
(iii) Obturator (special structure) act as a bridge for growth of pollen tube.
(iv) Cations are naturally occurring chemotropic agents in the pistil.
3. Entry of pollen tube into embryo sac :
(i) It enters into the ovule by either of the two methods; porogamy, chalazogamy or mesogamy.
(ii) Irrespective of the mode of entry of pollen tube into the ovule, the pollen tube always enters into embryo sac at micropylar end (Porogany).
(iii) If enters through chalaza (base) it is termed chalazogany.
(iv) If pierces through integuments, it is called mesogamy.
(v) Tip of pollen tube penetrates embryo sac and reaches egg apparatus.
4. Syngamy (Generative fertilization)
(i) Pollen tube burst as tube nucleus disorganises.
(ii) One of male gametes fuses with egg cell or oosphere.
(iii) Deploid oospore or zygote is formed.
5. Triple fusion (Vegetative fertilization) :
The other gamete fuses with secondary nucleus forming triploid primary endosperm (PEN) which later give rise to endosperm.
Answer:
Double fertilization is a process unique to flowering plants (angiosperms) in which two sperm cells fertilize two different structures within the female reproductive system. The steps of double fertilization are:
Pollination: transfer of pollen grains from the male to the female flowerGermination: the pollen grain forms a pollen tube and grows down the style towards the ovuleSyngamy: the first sperm cell fuses with the egg cell to form a diploid zygote (2n)Endosperm formation: the second sperm cell fuses with two polar nuclei to form a triploid cell (3n) which undergoes cell division to form the endospermEmbryo formation: the zygote undergoes several rounds of cell division and differentiation to form the embryoDouble fertilization leads to the formation of both the embryo and endosperm within the ovule, which ultimately results in the development of a seed.
Which of the following describes industrial agriculture?
A) Included the use of biotechnology
B) Maximized the use of hand tools and animals
C) Introduced machines and synthetic fertilizers
D) Relied on generous amounts of water
edit- it's C
Answers
The option that describes industrial agriculture is: Introduced machines and synthetic fertilizers. Option C is the correct answer.
What is industrial agriculture?This refers to the large-scale, intensive production of crops and animals, often involving chemical fertilizers on crops or the routine, harmful use of antibiotics in animals (as a way to compensate for filthy conditions, even when the animals are not sick).
"Introduced machines and synthetic fertilizers," best describes industrial agriculture. Industrial agriculture is a farming method that emphasizes maximizing productivity and efficiency through the use of technology, such as machines, synthetic fertilizers, and pesticides, and large-scale monoculture cropping systems. It has been developed to meet the growing demands of a rapidly increasing global population and to provide affordable food products. The use of machines and synthetic fertilizers allowed for a significant increase in crop yields, but it also has some negative consequences, such as environmental degradation and soil degradation over time.
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To help meet the world's demand for food, which biotechnological
process is most likely to be used by agricultural industries?
O use of transgenic crops
O crop diversification
O spraying of organic herbicide
crop rotation
Answers
Answer:
use of transgenic crops
Explanation:
Since transgenic crops are genetically modified, the pros are that: there is more crop yield, increased nutrients, etc.
The use of transgenic crops is most likely to be used by agricultural industries. Hence, option A is correct.
What are transgenic crops?Crops that have undergone genetic engineering techniques to alter their DNA are referred to as genetically modified crops. Plant genomes can be modified physically or by transferring sequences contained in T-DNA binary vectors using Agrobacterium.
The goal of introducing a gene combination into a plant is to increase its productivity and usefulness. This technique offers benefits like extended shelf life, increased yield, improved quality, pest resistance, heat, cold, and drought tolerance, as well as resistance to a range of biotic and abiotic challenges.
The use of transgenic crops is most likely to be used by agricultural industries. Hence, option A is correct.
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20 POINTS!
Which statement best represents how structure relates to function?
Labrador retrievers can be black, yellow, or chocolate colored.
Tortoises in the wild can live for more than 150 years.
People can develop a tolerance for spicy food over time.
A deer's horizontal pupils help it scan the horizon for predators.
Answers
The statement that best represents how structure relates to function is as follows: a deer's horizontal pupils help it scan the horizon for predators (option D).
How does structure of an organism relate with function?A structure is an overall form or organization of organs, tissues, cells etc. in living organisms.
Living organisms are directly dependent on certain structures in their morphology to survive. This is because these structures perform specific functions that determine their survival.
Examples of structures found in living organisms and the function they perform are as follows:
Eyes - sightRadula - feeding in snailsCilia and flagella - for movement and locomotionRoot hairs - for absorptionTherefore, the statement that best represents how structure relates to function is as follows: a deer's horizontal pupils help it scan the horizon for predators.
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what is a national park
Answers
Answer:
a scenic or historically important area of countryside protected by the federal government for the enjoyment of the general public or the preservation of wildlife.
"commercial exploitation of natural resources in a national park is illegal"
Explanation:
brainliest plz
Answer:
an area of countryside, or occasionally sea or fresh water, protected by the state for the enjoyment of the general public or the preservation of wildlife.
Explanation:
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Worked examples are primarily a benefit to learners who???
lack contextualized knowledge.
lack experience with the procedure.
lack self-efficacy.
lack motivation to solve problems
Answers
B. Worked examples are primarily a benefit to learners who lack experience with the procedure.
What is meant by the term "Worked examples"?Worked examples are step-by-step demonstrations of how to solve a problem. They provide an opportunity for learners to observe the problem-solving process and learn how to apply the same techniques to similar problems.
They are often used in mathematics and science classrooms because they are an effective way to teach complex concepts.
Worked examples can also be used to demonstrate other types of skills, such as writing or creative problem-solving. In these cases, the examples can provide a model of how to approach a problem, or how to structure an argument or essay. By studying the worked examples, learners can learn how to apply the same principles to their own work.
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PLEASE ANSWER!! I WILL GIVE BRAINLIEST!!!
Which layer contains most of the air pollutants released by human
activity?
A. troposphere
B. mesosphere
C. thermosphere
D. asthenosphere
Answers
Answer:
A: Troposphere
Explanation:
The troposphere contains the largest percentage of the mass of the atmosphere relative to the other layers. It also contains some 99 percent of the total water vapor of the atmosphere. The temperature of the troposphere is warm (roughly 17º C) near the surface of the earth.
Answer:
a
Explanation:
Which of the following statements about cell respiration is true?
Answers
Answer:
The actual answer is C not d
Explanation:
Just did the gizmo
During the process of cell respiration when the organism converts the chemical energy from oxygen molecules.
The Cell respiration includes the catabolic reaction that breaks the larger molecules and releases the waste products. The overall reaction occurs through the biological redox reaction. nutrients are commonly used by the animal and plants cells for the process that include salts, sugars, and fatty acids.Hence the option C that is electron leaves the transportation chain in the water molecule is correct.
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Which base pairs with thymine (T) in RNA?
Answers
Answer:
Uracil
Explanation:
Adenine pairs with thymine and cytosine pairs with guanine in DNA but when it's RNA thymine is replaced with uracil
Which of the following are correct? (Select more than one answer) Select 2 correct answer(s) Question 4 options: A small amount of heat energy is transferred to a consumer on the next trophic level. A small amount of chemical energy is transferred to a consumer on the next trophic level. A large amount of heat energy is lost before predation. A small amount of heat energy is lost before predation.
Answers
The options that are correct are:
Option A: A small amount of heat energy is transferred to a consumer on the next trophic level. Option D: A small amount of heat energy is lost before predation.How can a food chain lose energy through heat?The energy does not always move up the food chain from one level to the next. 90% of energy may be lost as heat (emitted during respiration), through motion, or in foods that people cannot digest. Decomposers can use the energy held in undigested items.
Note that Each trophic level's energy content diminishes as it progresses through an ecosystem. At any given trophic level, only 10% of the energy is transmitted to the next level.
Thus, the remaining 90% is primarily wasted as heat during metabolic activities.
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Draw a geologic feature with at least three layers that demonstrates the principle of lateral continuity.
Answers
A geologic feature with at least three layers that demonstrates the principle of lateral continuity is called a Grand Canyon.
According to the lateral continuity concept, sedimentary rock strata were formerly continuous over wide areas. As a result, any layer discontinuities must be the result of erosion or other geologic processes.
The layers in this sketch are continuous laterally, which means they extend in all directions while holding onto their thickness and makeup. We can presume that the layers go farther in all directions even though we can only see a small section of them in this sketch. This is significant because it enables geologists to link the age and make-up of distinct rock layers.
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What will happen to the environment where kudzu plants grow and spread?
OA. The amount of sunlight reaching the ground will decrease, which will cause other plant species to die.
OB. The soil will become more sandy, which will cause other plant species to die.
OC. The temperature and wind speed in the area will drop, which will cause more plant species to grow.
OD. The amount of rain in the area will increase, which will cause more plant species to grow
Answers
Answer:
Its A. The amount of sunlight reaching the ground will decrease, which will cause other plant species to die. 100%
Explanation:
I did it on study island :)
Is a crystal alive? Why or why not?
Answers
Answer:
A crystal is an inorganic (not alive, not from something alive) homogeneous solid (meaning a solid with the same properties at all points) with a three-dimensional, repeated ordering of atoms or molecules. ... Crystals grow in one of three primary ways: from a vapor, from a solution or from a melt.