They train our immune system so it's ready when our bodies are attacked, and they aid in digestion and supply us with vitamins. ... Scientists and doctors can even utilize prokaryotes to help the human body.
Answer:
Darwin's greatest contribution to science is that he completed the Copernican Revolution by drawing out for biology the notion of nature as a system of matter in motion governed by natural laws. With Darwin's discovery of natural selection, the origin and adaptations of organisms were brought into the realm of science
Feldspar and quartz are the correct answers
I would say that active transport is the answer because it's from LOW concentration to HIGH concentrations, so it's going against the concentration gradients.
A decomposer eliminates waste from remains of organisms. An example is a fungus. If it were missing from an ecosystem, it would not allow for the "recycling" of organisms, and therefore there would be a buildup of animal and forest waste.