Answer:
Role of organisms in the nitrogen cycle:
Bacteria play a central role: Nitrogen-fixing bacteria, which convert atmospheric nitrogen to nitrates. Bacteria of decay, which convert decaying nitrogen waste to ammonia. Nitrifying bacteria, which convert ammonia to nitrates/nitrites.
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<span>The nurse should let the client perform the ritual. The ritual keeps the client calm and helps the client keep his or her anxiety in check. If the client is not allowed to perform his or her ritual they will most likely become unpredictable and carry out more aggressive behavior or exhibit new bad behavior due to anxiety. This method keeps the client, the nurse and any other people close by safe from harm.</span>
Answer:
To prevent the loss of genes as chromosome ends wear down, the tips of eukaryotic chromosomes have specialized DNA “caps” called telomeres. Telomeres consist of hundreds or thousands of repeats of the same short DNA sequence, which varies between organisms but is 5'-TTAGGG-3' in humans and other mammals.
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Answer:
Evolution is is the change in the characteristics of a species over several generations and relies on the process of natural selection. it is reffered to as a theory because it is an incontrovertible fact that organisms have changed, or evolved, during the history of life on Earth.
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