Can some one me learn dimensional analysis a link or something would be fine

Individuals do not compete directly for resources, but are prey for the same predator

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.

What does the splanchnic nerve innervate?