........is defined as behavior that might decrease individual fitness but increase the fitness of others.

biological rhythm is one based on the tides and is called a .........cycle.

.........is a periodic group movement that is characteristic of a population or species.

..............is a period of inactivity and lowered body temperature that some animals undergo in the winter as protection against the cold weather and lack of food.

There are many ways animals can communicate, including: ................

Bright colors often serve as a warning that an animal is poisonous. This is called ..........

Some animals release chemicals called ...........that cause individuals of the same species to react in a predictable way.

Some animals gain protection by looking like a dangerous animal. This strategy is called ...........

..........is a transfer of a signal or message from one animal to another that results in some type of response.