Explain how flooding affects rivers and how flooding can be influenced by human activity

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects