Abiology student wants to conduct a study of how much sunlight affects the length of sleep for mice. she sets up four cages with a mouse in each cage. what are the independent variable, dependent variable, and constants?

Which is true concerning the products and reactants of photosynthesis and cellular respiration? a. the products of photosynthesis are sugars and the reactants of cellular respiration are starches. b. the products of photosynthesis are reactants in cellular respiration. c. oxygen is needed for photosynthesis and is given off in cellular respiration.