What can scientists study to gain a better understanding of prokaryotic life on Earth millions-if not billions-of years ago?
A)microfossils of bacteria
B)stromatolites and sediments
C)carbon isotopes in limestone
D)molecular (lipid)fossils
E)All of these choices are correct.

Question

Quizplus · Accepted Answer

Scientists can gain a better understanding of prokaryotic life on Earth millions-if not billions-of years ago by studying microfossils of bacteria, stromatolites and sediments, carbon isotopes in limestone, and molecular (lipid) fossils. Microfossils of bacteria provide direct evidence of ancient life, while stromatolites and sediments record the activity and environmental preferences of microorganisms. Carbon isotopes in limestone can help determine the type of photosynthetic pathway used by ancient microorganisms, and molecular fossils can provide information on the specific types of microorganisms that lived in the past. Therefore, all of these choices are correct.

What Can Scientists Study to Gain a Better Understanding of Prokaryotic