A student decided to make a model of an ecosystem in a plastic bottle like the one shown. which of the following is a scientific question the student might ask? A. Is it ethical to keep invertebrates in a plastic bottle?
B. How does sunlight affect a model of a biogeochemical cycle?
C. How beautiful are the plants in my model?
D. Why do people recycle plastic bottles?

How does the carbon cycle involve an exchange of carbon

Dan made the table shown to describe two different relationships between animals. organism interactions relationship a relationship b one organism lives inside the organism it feeds off no organism is harmed which of the following statements is most likely correct?

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.