Name this structure ​

Why did southern business leaders want to increase the number of slaves

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?