Altruism in animals _____
a. increases another individual’s reproductive success at its own expense
b. has no selective value
c. is a recent evolutionary development observed only in mammals
d. is attributable to random behavior
e. is commonplace in vertebrates
ANSWER: a
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A) chelicerae B) an open circulatory system C) an exoskeleton D) a cuticle E) a cephalothorax
________________ is directional growth responses of plants to a unidirectional source of light.
A. Gravitropism B. Thigmotropism C. Dormancy D. Phototropism E. Thermotropism
Decreasing the angle between two bones is ____
a. flexion b. extension c. abduction d. adduction e. pronation
What would a person born without an epiglottis not be able to do?
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