Why didn't earth shatter after the Mars-sized object collided with it?

The gray and white matter of the cerebrum have distinct purposes as well as different structure. Which statement best describes the gray matter of the brain?

How does the control of gene expression lead to differentiation of cell function in multicellular eukaryotes?

How would scientists determine that punctuated equilibrium occurred by examining the fossil record?

Which coal field location is related to coal fields in the eastern United States and supports the theory of continental drift? eastern India southern Africa western Australia northern South America

Why does each person have the same genetic makeup as the zygote he or she developed from?

8. List at least 5 new discoveries about viruses.

The phospholipid molecule has two parts, the polar end and the bipolar end. True or False?

Giraffes use their extremely long necks to reach the lees high up on a case he had trees which other animals can not reach giving them a food source for which they have few competitors what can you conclude about natural selection from this

Which is a reason that many organisms that have existed on earth have left no fossils?

Are all organisms with similar physical characteristics related to one another? If not, why?