1. A biologist collected water samples from local ponds. Which set of conditions below would indicate the greatest diversity of organisms?*
a) low oxygen levels, high light levels, many nutrients
b) high oxygen levels, low light levels, few nutrients
c) high oxygen levels, high light levels, few nutrients
d) high oxygen levels, high light levels, many nutrients

Plants transfer carbon in the carbon cycle a. through assimilation of carbon from the soil. b. when carbon transpires from their stomatae. c. when they are eaten by animals. d. through fixation of carbon in the soil.plants transfer carbon in the carbon cycle a. through assimilation of carbon from the soil. b. when carbon transpires from their stomatae. c. when they are eaten by animals. d. through fixation of carbon in the soil.