Answer:
The answer is c
Explanation:
the the immune system protects the body against harmful pathogens by producing special proteins called antibodies.
The second and third one I believe
The answer is D because this would help them to survive and is equal to natural selection
<span> In prophase of mitosis the chromosome pairs do not come together to form a tetrad as they do in meiotic prophase I and so the chances of homologous chromosomes meeting and pairing in mitosis is greatly reduced</span>
Cells splitting maybe...........
