Answer:
The answer is A.) Active Transport! :)
Answer:
The increased temperature in this layer is due mainly to UV absorption by various chemical species, including ozone and molecular oxygen present in the stratosphere. Maximum heating takes place in the upper part of the stratosphere. Because of the stable air, pollutant mixing is suppressed within this layer.
Answer:
D. They float on convection currents in the mantle.
Explanation:
i would say they mix it with something else to make it cook easier