Prokaryotes are different from all other organisms in that their cells
a. lack nuclei.
b. have organelles.
c. have cell walls.
d. lack dna.

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

In general, are there any major differences that you can see? explain