The light-independent reactions of photosynthesis need

a. oxygen.
b. carbon dioxide.
c. cellulose.
d. water.

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

All organisms contribute some water to the water cycle by conducting

In "the pig," what is the main effect that the piglet initially has on kibuka?