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.
B
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At an atmospheric pressure of 870 mm Hg with 21 percent oxygen, the partial pressure of oxygen is _____
A) 100 mm Hg B) 127 mm Hg C) 151 mm Hg D) 182 mm Hg E) 219 mm Hg
A process that results in individuals of two populations losing the ability to interbreed is referred to as
(a) stabilizing selection. (b) fusion. (c) speciation. (d) differential migration.
Which type of chromosomal change occurs when a portion of a chromosome is lost? a. None of these choices
b. Inversion c. Translocation d. Duplication e. Deletion
In a typical feedback loop, an integrator involves the ________ system and an effector involves the ________ systems
a. receptor / nervous b. glandular / receptor c. nervous / muscular or glandular d. stimulus / response