Darwin's finches, and the studies by the Grants, finally proved that
A. differences in beak size were the result of natural selection and were inherited.
B. beak size adjusted within a given year depending on nutrition status.
C. beak sizes were completely random and no pattern was determined.
D. beak sizes made no difference as to the food being eaten.
Answer: A
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As in the development of computer hardware, interest in large-scale DNA sequencing is stimulating the development of sequencing devices that (select all that apply)
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Scientists want to determine whether chemical X, a component of fertilizer, is harmful to fish. They treat fish in the
laboratory with increasing amounts of the chemical for one week and then measure their viability. When researchers designed this experiment, they wrote "chemical X is toxic to fish" in their lab notebook. This statement is a(n) ____.
a. interpretation b. prediction c. hypothesis d. result e. theory
If the soil around a plant is treated with a fungicide, the plant may experience a decline in DNA synthesis.
Answer the following statement true (T) or false (F)
__________, the volume of air that moves in and out of the lungs during one respiratory cycle, is normally far less than __________.
Fill in the blank(s) with the appropriate word(s).