The tube connecting the throat to the stomach:
What will be an ideal response?
esophagus
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The discovery of the fossilized remains of Archaeopteryx in 1860 set forth the hypothesis of birds being closely related to
A. dinosaurs. B. salamanders. C. bats. D. butterflies. E. bees.
The three main categories of energy-producing foods are ____
a. fats, carbohydrates and vitamins b. fats, vitamins and proteins c. fats, carbohydrates and proteins d. fats, carbohydrates and alcohol e. carbohydrates, vitamins and proteins
D 27. The rate of diffusion through a selectively permeable membrane will be lowest when which of the following is(are) true?
I. Concentration gradients are steep. II. Temperatures are low. III. Solutes are small molecules. a. I only b. II only c. I and III d. II and III e. I, II, and III
When the rodenticide warfarin was first introduced, rats were very susceptible to it. The development of resistance to warfarin by rats was the result of
A. the development of other blood clotting factors. B. natural selection of individuals that had a beneficial mutation. C. the high biotic potential of rodents. D. inheritance of acquired characteristics. E. mutation induced by warfarin.