The answer is D.rainforest. it is a very complex ecosystem with variety of plants and animals.
It’s D a single stranded structure consisting of unlabeled DNA from the gene
During an influenza outbreak, many people get infected and die. However, part of the population acquires immunity and survives. This is due to variations in the genotype and phenotype among individuals in the population. Probably a particular phenotype confers resistance to influenza. Therefore, this population is able to grow and develop to maturity and reproduce. Their genes are therefore passed over to subsequent generations.
