What process accounts for species diversity?

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

According to the cladogram, which organisms have roundworms as a common ancestor?

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?