1. 1) By which process is the potential energy of
organic molecules transferred to a form of
energy that is usable by the cells?
1) digestion
2 ) hydrolysis
3) photosynthesis
4) respiration

3. Which of the following is a producer-consumer
relationship?
foxes eat rabbits
people eat mushrooms
frogs eat flies
rabbits eat grass

4. 4) The biotic component of an ecosystem is
a community.
b. water.
b. the temperature.
c. the climate.

5. Key piece of information

16. Carbon cycle
Producers incorporate chemicals from the nonliving environment into organic compounds.
Consumers feed on the producers, incorporating some of the chemicals into their own bodies and releasing some back to the environment in waste products.
As organisms die, decomposers break them down, further supplying the soil, water, and air with chemicals in inorganic form. The producers gain a renewed supply of raw materials for building organic matter, and the cycles continue.