I'm pretty sure they come closer, and on the small chance i'm wrong, they separate.<span />
I believe D. because all the organisms that live in a lake can be a bunch of living things that would be considered a population and not a species. I canceled out B. from the get go because, I don’t believe non living organisms can be in a population ?
Please get back to me if I’m right or wrong :)
A colored line, as long as it is one single piece, not broken
