Answer: 3. in the icecaps. 2. temperature. 1. the second one
Explanation:
Natural selection allows nature to chose which species survives. Only the fittest get to pass on their genes. And by fittest i mean the ones that are better adapted to the environment.<span />
Answer:
peptide antigens by MHC class II molecules
Explanation:
Helper T cells are activated by peptide antigens by MHC class II molecules. These antigens express on the surface of antigen-presenting cells (APCs). After activation, the T helper cells divide and secrete cytokines to assist the immune response.
The correct answer is D: stable and not growing or shrinking. I hope this helped:)
Which of the following bio molecules typically contains both nitrogen and phosphate?
The answer to this question would be nucleic acids. That is because they contain a phosphate base and a nitrogen group.
