In rain forests the trees high in the canopy receive a large amount of direct sunlight. Plants that grow under the canopy receive less light. Why do plants that grow on the ground in rain forests have broad leaves?

About how much of the cell mass is watet

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

Which pair of chromosomes determines sex in humans? a.15th b.1st c.23rd