Which statement accurately summarizes the Alvarez asteroid impact theory of dinosaur extinction?

(1)An asteroid struck Earth, altering the environmental conditions and leading to the extinction of many species, including dinosaurs.

(2)Changes in global temperatures imposed stress on the dinosaurs and they could not adapt fast enough to survive and reproduce.

(3)All dinosaurs lived in an isolated area. An asteroid struck this area, killing many dinosaurs. There were not enough survivors to maintain the species over time.

(4)Dinosaurs that ate plants competed for food with too many other organisms. Due to their size, they could not find enough food to survive.

The following features which will confirm that this can only be a lymph vessel include the following:

c. Designed to handle low fluid pressure

d. One-way flow of fluid

f. Connection to the heart.

This is referred to as the network of capillaries and tubes which are located throughout the body and transport lymph away from tissues. they are also involved in the collection and draining of lymph and it is usually done at the node region.

This type of vessel works under low pressure and allows the flow of fluid in only one direction. This is enhanced by the presence of the semilunar valves.

It is connected to the heart as it helps drain tissue fluid in order to maintain the steady-state interstitial fluid equilibrium thereby making it the correct choice.

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Answer:

1. Yes

2. No

3.No

Answer:

ATP

Explanation:

cellular respiration makes a lot of ATP; i think its like 38

Answer:

Explanation:

Shan

Answer:

Multipotent

Explanation:

I just did it right now.

Answer:

No, it is not.

Explanation:

Looking at this chart, this looks to me to be a case of an x-linked recessive disease.  (If you want to know how to tell, or got some context that this is not the case, let me know)

Remember that females have two x chromosomes and males have one x and one y chromosome. As this disease is recessive, this means that for a female to exhibit the disease, she must have both x chromosomes have the disease. If she only has one x chromosome with the disease, she's considered a carrier.

On the other hand, males are completely binary, as they only have one x chromosome - either their x chromosome has the disease, and they exhibit it, or their x chromosome does not, and they do not have the disease, nor do they carry it. Thus, males can also not be carriers.

A square on the chart is representative of a male, while a circle is a female. IV-2 is a square, thus he is a male. This means that he cannot be a carrier, so your answer is no.

If any of this doesn't make sense, feel free to let me know! Hope this helps.

Answer:

Cellular respiration uses oxygen as a reactant and photosynthesis does not​

Explanation:

Autotrophs use CO2 to make energy while heterotrophs use Oxygen.

You only gave one option so that's as far as I can get, sorry!

Light year and parasecond are some of the units which are used to measure the distance in space.

Since space is so vast, many astronomers prefer not to measure distances in miles or kilometers. Instead, we employ a unit of measurement known as a parsec. a method used by astronomers to describe spatial distances.

A parsec is equal to 30,86 trillion, kilometers. The nearest star, Alpha Centauri, comes to mind. It is 41,560,000,000,000 (or 41.56 trillion) kilometers away, or 1.347 parsecs.

Although a 1,400-year-old statement in the Koran relating it to the revolutions of the moon around the Earth is true.

Therefore, Light year and parasecond are some of the units which are used to measure the distance in space.

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Answer:

Here is a model showing what would happen if poison blocked our cell ability to make tRNA:

[Image of a cell with a large red X over the tRNA]

tRNA is a type of RNA that is involved in protein synthesis. It helps to carry amino acids to the ribosome, where they are assembled into proteins. If poison blocked our cell ability to make tRNA, it would prevent us from making proteins. This would lead to a variety of health problems, including:

* Muscle weakness

* Weight loss

* Fatigue

* Hair loss

* Skin problems

* Infections

* Death

In severe cases, blocking tRNA production can be fatal.

Here is a more detailed explanation of how tRNA works:

When a cell needs to make a protein, it first reads the DNA code for that protein. This code is transcribed into messenger RNA (mRNA). The mRNA is then translated into a protein by the ribosome.

The ribosome reads the mRNA codon by codon. Each codon is a sequence of three nucleotides that codes for an amino acid. The ribosome uses tRNA to bring the correct amino acid to the ribosome for each codon.

The tRNA molecule has an anticodon that matches the codon on the mRNA. The anticodon is a sequence of three nucleotides that is complementary to the codon on the mRNA.

The tRNA molecule binds to the ribosome at the codon that it matches. The amino acid that is attached to the tRNA is then added to the growing protein chain.

This process continues until all of the codons on the mRNA have been translated. The ribosome then releases the protein chain.

If poison blocked our cell ability to make tRNA, it would prevent the ribosome from getting the correct amino acids for each codon. This would result in the production of faulty proteins. These faulty proteins could damage the cell or even kill it.

Are primarily sugars and starches

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Brighter feathers, however, give male birds a reproductive advantage and assist them attract female birds for mating. Because of this, populations of birds with brighter plumage continue to exist despite having a higher risk of being eaten by a predator.

They are used to entice prospective partners. Birds may recognize their own species by using colors and patterns. Birds can camouflage themselves against predators by using different colors. When courting, colors are utilized to draw attention (ie: courtship displays).

Some animals are colored for physical protection, and some frogs can change the color of their skin to regulate their body temperature. Pigments in the skin of some animals prevent sunburn.

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Answer: Its D- become the dominant bird in the population

Explanation: I got it right on the test

Answer:carbon footprint

Explanation:

that’s the answer trust me :)

Answer:

This question lacks options, the options are as follows:

A. formation of ATP from glucose during respiration

B. formation of carbohydrates from carbon dioxide during photosynthesis

C. formation of oxygen from water molecules during photosynthesis

The answer is A. formation of ATP from glucose during respiration

Explanation:

Oxidation reaction is a type of reaction that involves the loss of electrons (e-) by a compound or molecule. The compound/molecule that loses the electron is said to be OXIDIZED.

According to this question, Chris is studying oxidation and reduction reactions (redox). An example of oxidation reaction she could use is FORMATION OF ATP FROM GLUCOSE DURING RESPIRATION. Glucose (C6H12O6) undergoes series of oxidation reactions in glycolysis, Krebs cycle and ETC, as it loses electrons to eventually produce energy (ATP).

The specific properties of the most desired organic semiconductors for solar panel technology may evolve as advancements are made in the field.

In the context of solar panel technology, the most desired type of organic semiconductors would typically possess the following characteristics:

High Efficiency: The organic semiconductors should have a high power conversion efficiency, meaning they can efficiently convert sunlight into electricity. This is crucial for maximizing the electricity output of solar panels.

Tunable Bandgap: Organic semiconductors with a tunable bandgap would be advantageous. The bandgap determines the range of light wavelengths that can be absorbed by the material. A tunable bandgap allows for optimization to match the solar spectrum, enabling better absorption of sunlight and improved overall efficiency.

Long Operational Lifetime: The organic semiconductors should be stable and exhibit a long operational lifetime. Solar panels are expected to endure outdoor conditions for many years, so the materials used should be resistant to degradation, such as from exposure to UV radiation or moisture.

Scalability and Low Cost: Manufacturers aim to produce organic semiconductors on a large scale at a low cost. Therefore, desirable organic semiconductors should be readily synthesized using cost-effective methods and be compatible with high-volume manufacturing processes.

Environmental Friendliness: Organic semiconductors that are environmentally friendly and have low toxicity are desirable. This is aligned with the goal of sustainable and clean energy technologies.

It is important to note that the field of organic semiconductor research is still evolving, and scientists are continually working to improve the performance and characteristics of these materials.

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Answer:

It would benefit Indiana farmers because they'll need less fertilizier, they'd save more money by not buying as much fertilizer, and ditch maintence would cost farmers less as well.

Explanation:

Answer:

These ditches will save farmers money, especially when combined with cover crops. An Indiana farmer reported using less fertilizer because fewer nutrients wash away. The ditches need to be dug out less often. It costs money to dig out a ditch, so limiting this expense will save farmers money in the long run.

To answer this question we need to analyze each available option:

Burning clothing: This method was used during great plagues such as smallpox or the black death, so this cannot be.

Storing water in copper containers: Copper is known for its antibacterial properties, so it was used to store water.

Salting food: This is a very ancient method to preserve food, especially meat so this cannot be.

Microwaving food: microwave kill many microorganisms, however, it was designed primarily to heat food and is still used mainly for this purpose, also is a modern invention so this is the correct answer.

The elements of a gram-negative cell wall are as follows: Layer of peptidoglycans: It is made up of a mucopeptide chain that resembles the cell wall of gram-positive bacteria and is extremely thin.

This is made up of substitute NAM and NAG molecules ( N acetyl muramic acid and N acetyl glucosamine). exterior membrane : This is a phospholipid layer that is external to a thin peptidoglycan layer and is covalently linked to the latter by a membrane protein known as Braun's lipoprotein.

Lipopolysaccharide: It is only gram negative bacteria that have this layer. There are three parts: Lipid A: The remaining LPS molecule protrudes from the surface and is buried in the outer membrane. Core polysaccharide: It is an area of lipid that is projected. It is an expanding polysaccharide chain with an O side chain or O specific polysaccharide.

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Statements 1 and 3 are true, while statements 2 and 4 are false.The first energy transformation in the scenario is chemical energy to kinetic. - True.

The archer converts chemical energy stored in their muscles into kinetic energy when they release the string and propel the arrow forward.From the time the archer draws the bow until the thud is heard, entropy increases in the universe. - False. Entropy is a measure of disorder or randomness in a system. In this scenario, the archer's actions do not necessarily lead to an increase in entropy.

The energy of the arrow at the end of the scenario is equal to the energy exerted by the muscles of the archer. - False. Energy is conserved in a closed system, but some energy is lost as heat and sound during the process. Therefore, the energy of the arrow at the end may be less than the energy exerted by the archer's muscles.

When the arrow sticks into the tree, the original energy has all been used up. - False. Energy is not created or destroyed but rather transformed from one form to another. Some of the initial energy from the archer's muscles is transferred to the arrow's kinetic energy, but it is not entirely used up.In summary, statements 1 and 3 are true, while statements 2 and 4 are false.

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The nitrogen cycle is important to humans in the following way: it converts nitrogen into a form that humans can obtain by eating other organisms (option B).

Nitrogen cycle is the natural circulation of nitrogen in a series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.

During the nitrogen cycle, atmospheric nitrogen is converted to nitrogen oxides by lightning and deposited in the soil by rain, where it is assimilated by plants and either eaten by animals (and returned as faeces) or decomposed back to elemental nitrogen by bacteria.

The usable form of nitrogen that is assimilated by plants becomes accessible to humans when they consume the plants, hence, depicting the importance of the nitrogen cycle.

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Explanation:

Carbon dioxide is needed for photosynthesis, but oxygen is needed for cellular respiration. Assuming there is still oxygen then the plants will produce carbon dioxide and some of it will be reabsorbed by photosynthesis during daylight. However, ultimately there wouldn’t be enough carbon dioxide for the plants to grow and they will start to die. Some plants have evolved a C4C4 photosynthesis pathway so they only require a small amount of CO2CO2 to survive, however they do still require more than zero CO2CO2.

So basically you killed off all the plants and all the other non-microbial life died of starvation shortly afterward.

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Answer:

yes

Explanation:

over the years animals have developed different traits they learned from each other and observed by humans

Answer:

Serve to transfer signals between cells.

Explanation:

Intercalated disc also called gap junctions are structural formations that are located between the myocardial cells of the heart. They help to bond or connect cardiac cells fibers together. They also help in cell to cell communications and propagate action potential. They serve to transfer signals between cells.

Answer:

AIDS

Explanation:

AIDS is the most common infectious disease causing lymphocytopenia, which arises from destruction of CD4+ T cells infected with HIV.

Here we have the alleles H - no horns and h - horns, and the individuals that have horns (hh) are represented in the pedigree with a red filling.

• The parents in generation, ,I, ,are ,hh (I-1) , and ,HH (I-2),, so all of their children in generation II will be ,Hh, ,(II-2, II-3, II-5),.

• II-4, ,is red,, so it has a ,hh, genotype.

• II-1 y II-2 have no horns, but one of their children does ,(III-3, hh),, which means, II-1, also carries the recessive allele ,(Hh,).

• III-4, ,is red,, so it has a ,hh, genotype

• III-5 is Hh, because their mother is hh.

In summary, the genotypes would be as follows:

Generation I:

0. hh

1. HH

Generation II:

0. Hh

1. Hh

2. Hh

3. hh

4. Hh

Generation III:

0. HH

1. Hh

2. hh

3. hh

4. Hh

Answer:

D

Explanation:

A punnett square identifies the combination of two genomes. Depending on the specific set of genes, the combinations may be different. It measures probable outcomes by separating into Dominate and Recessive genes, Dominate overpowering recessive and therefore being more common.

I, II and III are ALL communicable diseases known for targeting the human immune systems. Communicable diseases are transmissible diseases.

Communicable diseases are transmissible diseases, generated by the infection of pathogens in a suitable host.

The human immunodeficiency virus (HIV) represents a major communicable disease around the world. Polio is also a communicable disease that spreads via human-to-human physical contact.

Polio is a communicable disease that is transmitted from an infected individual to an uninfected individual via coughs or sneezes.

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Answer: The correct answer is HIV

Explanation: I took the test.

The three biomolecules that are used for making ATP are Lipids (fats) , Carbohydrates and Proteins

The biomolecules also known as biological molecules serve a wide range of activities and they vary in shape and their size . It is also considered  essential to life because they help organisms develop, survive, and propagate. The biomolecules interact with one another  which play a role in the development of organisms .

There are four types of biological molecules which are carbohydrates which is used as an energy source , lipids which is used for storage and support , proteins is used for supporting essential vital functions and amino acids are the developing elements that make up proteins and nucleic acids for storing genetic information .

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The data shows a significant decrease in grizzly bear deaths from 581 in the earlier period to 281 in the later period.

The information about grizzly bear deaths in Alberta from 1976 to 1988 and from 1988 to 2000 affects the prediction made in question 1 by providing additional data points and context.This decrease in grizzly bear deaths suggests a possible declining trend in the population. If the overall trend continues, it is reasonable to assume that the population has decreased further since 2000.

Taking this new information into account, the prediction made in question 1 should be revised. Instead of assuming a stable population or a slight increase, it would be more accurate to predict a decline in the grizzly bear population in Alberta. However, it is important to note that additional factors, such as conservation efforts or changes in habitat, should also be considered to gain a comprehensive understanding of the population dynamics.

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The increasing use of renewable energy technologies, such as wind turbines and solar panels can affect us:

Renewable energy technologies are a promising solution to reducing greenhouse gas emissions and curbing the effects of climate change. The deployment of wind turbines and solar panels as viable means of generating renewable energy, could eventually slow down these emissions rates which threaten our planet’s health.

One major drawback posed by renewable energy is that they require enormous tracts of land for installation: this creates an issue of scarcity when it comes to usage rights. As we prepare to accommodate more people on this earth, growing conflicts may emerge between advocates of renewable infrastructure, food production supporters, homeowners, as well as conservation groups who argue over suitable land use policies.

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