Which of the following statements is true? natural energy sources are nonrenewable and being depleted. current fuels are not polluting the air. mercury released into aquatic ecosystems comes from rock erosion. the natural cycles of earth can clear up our current air and water pollution problems.

Which of the following statements best describes the relationship between the environment and human health? a. the environment is the only factor that affects human health. b. many aspects of the environment can have an impact on human health. c. human health is impacted by changes in climate. d. the environment has no impact on human health. select the best answer from the choices provided

When water freezes, it . contracts expands

Which identifies the main purpose of biological taxonomy?