Q: What occurs when there are differences in fitness among a population? Choices: - evolution - natural process - natural change - natural selection A:
natural selection

Q: When the volume of a gas is decreased, what happens to its pressure? Choices: - drops - LOWERS - STAYS THE SAME - increases A:
increases

Q: What kind of rock is gypsum? Choices: - basalt - igneous - metamorphic - sedimentary A:
sedimentary