Humans and gibbons have two different amino acids in their hemoglobin sequence. what does this say about the evolution of these two species?

Through an uplift under the earth's crust at a divergent boundary a is formed. a. cliff c. plateau b. fault d. mountain select the best answer from the choices provided a b c d i know the answer is not b

Q: a pair of homologous chromosomesa) always has the same genes and the same allows b)always has the same genes c)always has the same alleles d)never has the same genes

Which of the following may one conclude from a map that shows the average ph value of rainfall in the u.s.? acid rain is a more serious problem on the east coast. acid rain falls equivalently across the continental u.s. there are more factories on the west coast. the midwest has fewer forests than the rest of the u.s.