As the population of small fish in a lake decreases, the population of large fish that depend on the small fish for food will
reproduce faster
begin to produce their own food
decrease in number
increase in number

Based on the body structures of these animals, which two conclusions are scientifically the skeletal structure of the gorilla and chimpanzee suggest a common evolutionary ancestry. the dog and frog share a closer evolutionary ancestry than the gorilla and chimpanzee. the dog is more closely related to the frog than it is to the chimpanzee. all four organisms share a common vertebrate ancestor.