A group of students is observing these two species of squirrels and forming conclusions about how they are alike and different. Which type of investigation is this group doing. A. Controlled
B. Experimental
C. Descriptive
D. Comparative

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.