If the plants in a community produce 500 grams of organic matter per square meter per year that is available for animals in the community to eat, this amount of energy is known as the
A) availability factor of the community.
B) trophic factor of the community.
C) net primary productivity of the community.
D) consumership of the community.
E) secondary productivity of the community.
C
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Which of the following physical features make
it possible for amniotes to be completely terrestrial?
a. their skin b. their lungs c. their eggs d. their four limbs e. their brains
Which of the following hormone(s) is/are not synthesized from cholesterol?
a. Testosterone b. Progesterone c. Corticosteroids d. Retinoic acid
Actinomycetes are Gram-positive, spore-forming bacteria.
Answer the following statement true (T) or false (F)
You stumble upon an unidentified arthropod with no antennae and eight legs. This organism is likely closely related to _____.
A. grasshoppers B. ticks C. crayfish D. millipedes E. trilobites