A researcher is setting up a randomized clinical trial to evaluate the effect of acetaminophen on liver function, and designates a control group of subjects and an experimental group of subjects. What could
interfere with the results or completion of this study?

Which prefix mean under less or below

Grasses--> mice--> cats--> coyotes suppose 10,000 units of energy are available at the level of the grasses. what is the total number of energy units lost by the time energy reaches the coyote?

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.