Several primates have been taught to communicate with humans using sign language. This supports the view that animals other than humans can learn through the process of
A) social learning.
B) cognition.
C) trial-and-error learning.
D) imprinting.
Answer: B
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Mutagens increase the amount of damage to DNA
A. true B. false
In plants with only primary growth, the epidermis is not
A. one cell thick. B. the outer protective coating of the plant. C. produced by the protoderm. D. covered by a waxy layer that constitutes the cuticle. E. covered with bark.
The combined effects of inhibitory and excitatory effects on a postsynaptic cell will decide whether that cell generates an action potential. This principle is called ________
A) threshold B) internalization C) summation D) potentiation
The idiosyncratic hypothesis suggests that
A. Ecosystem function is independent of the number of species. B. Ecosystem function decreases as the number of species increases. C. Ecosystem function changes unpredictably as the number of species increases or decreases. D. Ecosystem function changes in a predictable, but non-linear manner with a change in species number. E. Ecosystem function decreases as the number of species decreases.