I NEED HELP LLEASE

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

Which factor affects the force of gravity between objects? check all that apply. direction distance mass shape time

Paleontologists have found plant fossils deep within the layers of the north polar region. these leaf fossils have been labeled as to the rock layers they were found in, with the lower numbers being layers close to the earth's surface and higher numbers representing deeper layers. according to the numbers of these four leaf fossils, what might you infer?