If carbon dioxide is denser than air and can form clouds that displace oxygen, why are we all still alive?

In a scientific experiment, a is any factor that can be changed or be changed

Which of the following statements about pesticides and residue is false? a. most conventionally grown produce has detectable levels of pesticides when purchased from the store. b. the us government has determined that small levels of pesticides in produce is safe for humanconsumption. c. organic produce always will be pesticide-free. d. farm workers, children, and pregnant women are at greatest health risk from pesticides. select the best answer from the choices provided.

The nations of indochina a. share a common langauge b. share a common history c. share a common religion d. none of the above