12. Atoms can have different numbers of which of the following? a. electrons
C. neutrons
b. protons
d. all of the above

Hydroelectric uses moving water to do work such as grinding grains in a mill true or false

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

You do things keep your body in balance everyday what things do you try to keep balanced in your everyday life