Which is not a volcanic hazard? a. pyroclastic flows in populated areas b. sulfur dioxide gases from an eruption c. subduction of tectonic plates at a boundary

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

Identify the main component f natural gas

Which of the following is true of photosynthesis? a)carbon dioxide is a reactant b)water is a product c)most reactions within this process are exothermic d)oxygen is a reactant