While in South America, you come across what you think are two groups of birds in the same location. They are nearly identical aside from their color
After years of observation, you
conclude that the birds eat similar diets and share similar behaviors but do not reproduce
with each other. These groups of birds appear to be an example of
A. a single biological species.
B. a single ecological species.
C. a ring species.
D. two different species on the basis of the
ecological niche occupied.
E. two different species on the basis of
reproductive behavior.
E
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Which of the following is not a characteristic of passive transport?
A) It requires binding of the molecule to be transported. B) It is specific for the molecule being transported. C) The energy for transport is generated by the gradient of the substance being transported. D) The energy for transport is generated by the molecular bonds of the substance being transported. E) Transport of the substance is the result of a conformational change.
The capillaries clustered around kidney tubule
cups differ from other capillaries in that they
a. have a much wider diameter. b. are much leakier. c. have arterioles at either end. d. carry lymph with blood. e. have more than one of these characteristics
Olney was born 2 months premature. According to this chapter, what respiratory problem is he most likely to have, and what can be done to correct it?
What will be an ideal response?
If you examine the soil profile revealed by a fresh road cut, which feature will you probably find in the B horizon?
A) an abundance of worms and burrowing insects B) an abundance of decomposing organic material C) an abundance of fine clay but not much organic material D) a predominance of slightly weathered rock and gravel