A scientist plants two rows of corn for experimentation. She puts fertilizer on row 1 but does not put fertilizer on row 2. Both rows receive the same amount of sun and water. She checks the growth of the corn over the course of five months. What is acting as the control group in this experimentA. Amount of fertlizer given to experimental groupB. Growth of cornC. Type of fertilizer

Option B) Growth of corn

Explanation:

Growth of corn, as the control group helps to differentiate between the two experimental groups (row 1 corns and row 2 corns).

Row 1: Fertilizer + Sunlight + Water

Row 2: Sunlight + Water only

Thus, in this case, the growth of corn after 5 months is expected to be much higher in Row 1 than that of Row 2.

b. the carbon cycle ensures living things have a source of hydrogen