Earth is composed of three(3) compositional layers. Many scientists believe that as Earth cooled the denser materials sank to the center and the less dense materials rose to the top. The least dense layer is the...

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

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?

Amoeba sisters video recap pedigrees