In the old practice of taking a pet canary into a coal mine to detect the presence of carbon monoxide, the canary represents a(n) ____ species.
A. generalist
B. native
C. indicator
D. specialist
E. keystone
Answer: C
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The volcanic islands visible here formed as a result of a mantle plume
Researchers working on these volcanic islands have collected basalt samples for potassium-argon dating to determine when these islands formed Volcanic Island A has been dated to 7.6 million years ago. Volcanic Island C dates back to 3.4 million years ago and is 200 km away from A. Using the equation Rate = Distance/Time, calculate the rate of plate motion for this region. A) 4.2 km/million years B) 47.6 km/million years C) 102.3 km/million years D) 26.3 km/million years
Which of the following is a correct IUPAC name?
A) 1-methylpropanal B) 2-ethylpropanal C) 2,2-dimethylpropanal D) none of these
Why does climate have such a strong impact on the type of soil that develops in a region?