The answer is c. heliotropism. Hope this helps.
Answer:
the layer of the earth's atmosphere that contains a high concentration of ions and free electrons and is able to reflect radio waves. It lies above the mesosphere and extends from about 50 to 600 miles above the earth's surface.
Explanation:
The plant is the organism that uses the sun’s energy and make it available to other organisms
The stage is referred to as Mitosis
Drilling is the result of fertilizer not working.