Which value most closely represents the amount of freshwater on earth, as a percentage of the total water on earth? 71 percent 50 percent 12 percent 2 percent

What do your cells need to live? a. carbon dioxide b. carbon c. air d. oxygen

Besides regulating what enters and leaves the cell, what is another function of your choice from question #1?

Match the following terms and definitions. the transformation of a larva to an adult; occurs only in animals having great differences in form between the larva and adult pupa 2. type of mammal that lays eggs monotreme nymph the part of certain insect life cycles in which the young animal has no wings or reproductive organs the developmental stage between larva and adult in insects undergoing metamorphosis metamorphosis 5. the male gonad which produces sperm testes