Test variable (independent variable) The food, pollution, and predators. Outcome variable (dependent variable): The population Control group what is the control group

What have we learned from fossil evidence about evolution? a) it is an abrupt change. b)the process is observable. c) it takes place during one lifetime only. d)the most complex traits are always selected.

What would most likely happen if a person increased the amount of saturated fat in his or her diet? the person's risk of cardiovascular disease would increase. the person's risk of cardiovascular disease would decrease. the person's bad cholesterol would decrease. the person’s good cholesterol would increase.

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?