What type of compounds contribute the most to acid rain?

A.) sulfur

B.) phosphorous

C.) glucose

D.) CFCs

Why are the products of the light reaction of photosynthesis important? A) They are used to produce sugar during the dark reaction. B) They are used to split excess water in the cell. C) They are used to build membranes and other cell structures.

The preservation or protection of natural resources is called

Describe the natural environment of the species in terms of abiotic and biotic factors.

Which phrase best describes the main function of the stomach?

What is the biggest disadvantage of solar electricity, or at least, why is it not used much more that it currently is

Why the lungs are considered part of the excretory system?

Which portion of the brainstem serves as the relay center between the cerebrum and the cerebellum? a. The diencephalon b. The mid brain c. The pons d. The medulla oblongata

The ability to move your right hand is controlled by the

Which best describes the risk of using repetition?

If a molecule is too large to slip through the spaces in the membrane, how will that molecule enter the cell? A. The molecule will shrink so that it can fit in the spaces. B. The molecule will move through a protein channel. C.