Suppose a small river with a population of 10000 frogs becomes polluted with cadmium to a level of 3 mg per gallon per day, about how many bullfrogs would be expected to die? a) about 3,000 b) about 7,000 c) about 8,500 d) about 1,500

C) About 8,500, because the cadmium is a very toxic element.

hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

mark as brainlest

gokuson

i think it is dna, i'm not totally sure but i think it might be.