What could be said of our sense of taste?
a) How we define what tastes good or bad is fundamentally a learned behavior.
b) There is no accounting for taste in evolution.
c) Individuals have widely different tastes that contributes to the variety of our species.
d) Taste is a matter of arbitrary preference.
e) What tastes good to us is dictated by our nutritional needs.
Ans: e) What tastes good to us is dictated by our nutritional needs.
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Examine the flux diagrams in Figure 25.6 to address the following questions. What is the difference in the rate of carbon exchange (in gigatons per year of carbon) between photosynthesis and respiration in the terrestrial environment?
What will be an ideal response?
Average height of college students increased throughout the 20th century because
A) more students attended college. B) more short students went into military service instead of college. C) nutrition improved greatly in that time. D) many mutations conferring great height occurred during that time period.
Mycorrhizae are symbiotic associations between fungi and plant
A) seeds. B) stems. C) roots. D) flowers. E) leaves.
Researchers in England found that, for three out of four habitat types they were studying, the most efficient strategy was to create a system of stepping stones linking existing habitat clusters. "Stepping stones" are a type of corridor.
Answer the following statement true (T) or false (F)