I can’t help much but I do know that homozygous means having identical alleles and heterozygous means having different alleles.
No I think you need to do some more research
A small amount of nitrogen is fixed by lightning, but most of the nitrogen harvested from the atmosphere is removed by nitrogen-fixing bacteria and cyanobacteria (formerly called blue-green algae). The nitrogen cycle transforms diatomic nitrogen gas into ammonium, nitrate, and nitrite compounds.
Answer:
It depletes resources until there are no longer enough to sustain the population
Explanation:
