Ethan deternines that layer B is 3.5 million years old due to the

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

The fluid mosaic model of the membrane proposed that membranes

Which organelle plays a role in intracellular digestion?