1. How do animals obtain the carbon used in cellular processes?
a. breathing in carbon dioxide
b. eating plants or other animals
c. photosynthesis
d. carbon fixation
2. Which two cycles depend on photosynthesis for part of the recycling process?
a. carbon and oxygen
b. water and nitrogen
c. water and oxygen
d. carbon and nitrogen
3. are organisms that take in energy when they feed on producers
or other consumers.
a. Consumers
b. Producers
c. Biotic factors
d. Abiotic factors
4. An example of a decomposer is a
a. Fox.
b. Human.
c. Bacterium.
d. toad.
5. Animals that eat the bodies of already-dead animals are
a. Herbivores.
b. Scavengers.
c. Prey.
d. predators.
6. Through which process do living organisms release carbon into the
atmosphere?
a. Photosynthesis
b. cellular respiration
c. Transpiration
d. Combustion
7. What are the two types of ecological succession?
a. primary and secondary
b. abiotic and biotic
c. plant and animal
d. erosion and deposition
8. How is a biome primarily identified?
a. average precipitation and temperature
b. characteristic community of organisms, particularly plants
c. distance from the equator
d. specific geographical location
9. A bird living in a tree with a pre-existing hole is a great example of
a. Parasitism.
b. Mutualism.
c. Commensalism.
d. decomposition.
10. What is a limiting factor?
a. any part of the living environment that influences whether or not an
organism survives
b. any part of the living and nonliving environment that influences
whether or not an organism survives
c. any part of the nonliving environment that influences whether or not
an organism survives
d. a mountain, ocean, river, or other landform that blocks an organism
from moving to another ecosystem