Volatile substances used by “huffers” travel rapidly to the brain, causing dizziness, giddiness, and euphoria. although these substances are not habit forming, studies show that long-term used can yield brain, kidney, and liver damage. what is this the study of? drug chemistry drug pharmacokinetics drug pharmacology toxicology

Compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.

Which factor affects the force of gravity between objects? check all that apply. direction distance mass shape time

1. in what ways have non-native species been beneficial? 2. what are some of the hypotheses for the collapse of honeybee colonies? 3. distinguish between regional and functional extinction. 4. why is it difficult to measure background extinction rates? 5. what three factors are most important in causing extinction rates to climb?