The Relationship between Photosynthesis and Respiration

Briefly describe the relationship between photosynthesis and respiration in terms of the reactants and products of each chemical reaction. Hypothesize why virtually every theory of mass extinctions on the planet such as the asteroid impact theory involve decreased sunlight as the source. In your explanation, briefly explain the asteroid impact theory. Give some thought to your study in chapter 1 of the levels of organization and how the elimination of plants would affect virtually every ecosystem on the planet, our biosphere.