The principle of superposition which states that in undeformed rocks, the younger rocks will be on top of older rocks, is particularly important because ________
A) it proved that life evolved by putting fossils in a logical order
B) it supports the laws of gravity which indicate that rocks must be deposited on something that already exists
C) it showed that the interior of the earth is not growing outward
D) it provided an order for assembling the relative ages of various rock layers
D
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You are planning a course of study that will result in a degree in microbiology. You also wish to work in a job that allows you to help solve our environmental challenges
Based on the discussion in this chapter about the issue of dealing with our waste problem, what type of work might you do? What will be an ideal response
The main cause of urban air pollution in China is
A. automobile traffic B. bicycles C. use of coal as a fuel D. trash
Imagine the river dries and the squirrel populations again share the same physical area. But they cannot interbreed. Evolutionary forces have acted independently on the populations while they were separated by the river, and ____________ has occurred.
a. selective forces b. more c. allopatric speciation d. microevolutionary events e. communicate f. interbreed g. less h. gene pool i. symmetric speciation j. macroevolutionary events
The strength of a rear-flank downdraft is driven by the amount of precipitation-induced cooling in the upper levels of the storm
a. True b. False