I think you're talking about histones. Histones are proteins found in eukayotic cell nuclei. Histones are what DNA wrap around so it fits inside the nucleus and helps with the formation of chromosomes.
Answer:
c
Explanation:
it would cause harm to the bay. therefore NOT protecting it
B Nature selection for traits the allow for increased rates of reproduction and survival over traits that don't, is correct.
A is also correct
I believe it is scientific laws.