Explanation:
I think it's D. Earthquakes
<em>Hope</em><em> </em><em>this helps</em><em>.</em><em>.</em><em>.</em><em> </em>
Answer:
: any of a series of chemical reactions in photosynthesis not requiring the presence of light and involving the reduction of carbon dioxide to form carbohydrate especially : calvin cycle.
Answer:
the correct answer would be D
Explanation:
The answer is signal transduction. It is also known as cell signaling. It is the transmission of molecular signals beginning from a cell's exterior to its interior. Signals got by cells must be transferred efficiently into the cell to make certain a suitable response. This step is started by the cell-surface receptors.