Which one of the following supports the hypothesis that life has changed over time?

a. fossils are distinct from rock layer to rock layer.
b. prokaryotes have no nucleus.
c. some fossil plants have deep roots.
d. the cell has no membrane.

The climate on the leeward side of a mountain differs from that on the windward side mostly in

Karen is a forensic scientist whose purpose is to identify and evaluate physical evidence. which of the following tasks does she perform? a. reporting results of scientific analysis b. interviewing suspects c. questioning witnesses d. preparing victims for burial

When a plant is genetically identical to its parent plant what is this called