Dichotomous keys ask
a. open-ended questions about animal behavior.
b. open-ended questions about easily observable characteristics.
c. yes-or-no questions about animal behavior.
d. yes-or-no questions about easily observable characteristics.

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics