Relate photosynthesis to the amount of carbon dioxide in the atmosphere.

high rate of photosynthesis reduces the amount of co2 in the atmosphere or high conc of co2 in the atmosphere increases rate of photosynthesis.

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.