Answer:It is known as a concentration gradient which in diffusion will always flow from ares of high concentration to areas of low concentrations
So i believe the answer to this is A.
Explanation:
Here is the correct answer that would best complete the statement above. As you move lower levels of classification, the number of organisms decreases and the organisms at the lower levels of classification have more characteristics that they share with each other.
Answer:
carbon dioxide controls temperature because the carbon dioxide molecules in the air absorb infrared radiation. The carbon dioxide and other gases in the atmosphere are virtually transparent to the visible radiation that delivers the sun's energy to the earth
Explanation:
