Annelids have _______, which are hair-like extensions anchored in their skin.
a. chaetae
b. parapodia
c. radula
d. nephridia
a. chaetae
Annelids have chaetae, which are hair-like extensions anchored in their skin.
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Multiple Excitatory Postsynaptic Potentials (EPSPs) from temporal summation and spatial summation can result in:
A. an action potential. B. filtering out of unimportant background signals. C. adaptation. D. hyperpolarization.
_____________ infects the CD4+ T cells, which are required for normal immunity.
Fill in the blank(s) with the appropriate word(s).
Primary carnivores are
a. tertiary consumers in the third trophic level. b. secondary consumers in the third trophic level. c. secondary consumers in the second trophic level. d. tertiary consumers in the fourth trophic level. e. also primary producers.
When the population size of a prey species increases, the birthrate of a predator species should also increase
Indicate whether the statement is true or false