Earths scientists think that caused significant climate change in the past. a humans b polar ice caps c global warming d plate tectonics

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

Acquired mutations can result from radiation pollution toxins inheritence select all that apply

Tropical rain forests support more species per unit area than any other terrestrial ecosystem. what is one way rain forests are important to the health of the biosphere?