Any ideas? thanks for the help!

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane

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.

Add solid urea to a beaker of water. the beaker gets very cold. is δh favorable or