Answer:
To a certain extent, population numbers are self-regulating because deaths increase when a population exceeds its carrying capacity. Disease, competition, predator-prey interaction, resource use and the number of populations in an ecosystem all affect carrying capacity.
The protein in the question can be referred to enzymes since its made of protein. The first statement is the answer
Nitrogen is special because it is necessary for growth and reproduction. It's needed for plants and animals to survive. The main function for the atmosphere i believe is to give oxygen and nitrogen.
I think they discovered chromosomes in DNA so that backed up his Idea
<span />
