The embryonic stage where the embryo cells are arranged into a hallow ball is called A) Morula
B) Blastula
C) Grastula
D) Fetus

PLEASE NO TIME WAISTERS

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

Environmental differences within ecosystems are generally caused by

Drag the tiles to the boxes to form correct pairs. match the causes with their effects cause: tectonic plates at transform boundaries experience friction. cause: tectonic plates at transform boundaries experience friction. cause: earth is covered by a crust that runs miles deep.