Chloroplasts. They are only in green plant cells, so, unless you are a green plant, humans and flatworms would not contain them.
The answer would reside with the dominant cattle which is the hornless cattle<span />
In order to live,grow,and reproduce.
I think the answers are A, B, and C.
Assuming the graph that shows plant groups B and C have a lower growth rate than group A, this shows that every plants needs a certian amount of sunlight to grow. Since they get their energy from the sun, it is the most crucial to a plants survival. If plants dont get the energy they need to live, as producers, primary consumers dont get get energy from producers. If primary consumer cant get energy, neither can secondary consumer and so forth.