B
(without the control you won't know what a normal result would be without the independent variable).
Answer:
A) Organic
Explanation:
Since coal is made up of the remains of living organisms, this makes it organic since the substances that make up it were/are organic.
The correct answer is letter B. The carpel of most flowers is made up of the stigma, the style, and the ovary. Carpel refers to the female reproductive organ of a flower, it is necessary in the increase of the population of plants and the growth of matures seeds that eventually become fruits that can be eaten or consumed by organisms.
