This chart shows four atoms, labeled W, X, Y, and Z. These atoms can combine with each other to form molecules.

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

Compare the composition of the moon's surface with the composition of the earth's surface.

When plants use sunlight to make food, the energy of sunlight is