Which human activity would have the largest negative effect on biodiversity?

After which event could you say that evolution has occurred? question 1 options: an allele frequency changes in a population. a white-eyed fly is born into a population of brown-eyed flies. a new predator comes into an environment. an animal gets fat.

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

Give an example of a trait that is controlled by more than one gene.