Q: Q: The theory of evolution by what (and other processes) explains both the diversity of organisms and how populations of organisms change over time? Choices: - natural evolution - characteristic selection - genocide - natural selection A:
A: natural selection

Q: Q: Acids are associated with a low number on which scale? Choices: - metric - acidic - ionic - ph A:
A: ph

Q: Q: What substances are involved in most of the chemical reactions that take place in organisms, including digestion? Choices: - proteins - hormones - vitamins - enzymes A:
A: enzymes

Q: Q: What's it called when gases turn back into liquids? Choices: - dehydration - diffusion - evaporation - condensation A:
A: condensation