Plants depend on the atmosphere for the largest source of: water
phosphorus
oxygen
carbon

Which of the following choices is not an effective solution to the energy waste related to inefficient lighting? a. using low-pressure sodium lighting sources b. pointing lights on billboards and street signs upward c. placing light sources on time controls d. shielding light to direct it downward

Types of scientific inquiry that biologist engage in that cannot be completely controlled

Sequence how oxygen accumulated in the atmosphere and the effect it had on life by completing the flowchart