Hibernation is . A. an example of an abiotic cycle
B. Triggered by changes in the weather
C. caused only by biotic factors
D. triggered by breeding patterns

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.