Heterozygous is when an individual carries two different alleles for a given gene.
Answer:digestive system
Explanation:
It's after mastication that enzymes act on the food to convert it into an assimilable manner
Because it’s the way a plant provides itself with food
I believe the answer is B, the survival of the fittest due to competition for resources. Survival of the fittest is a term that originated from Darwinian evolutionary theory was a way of describing the mechanism of natural selection. The biological concept of fitness is defined as reproductive success. Many organism overproduce to increase chances of survival for their organisms due to competition.
Answer:
The answer is D a retrovirus inserts DNA into the host cells genes
