What is the principle of uniformitarianism? Why does the principle of uniformitarianism lead to the
conclusion that Earth's age is great? What will be an ideal response?
Present-day processes have operated throughout geologic time; the laws of physics, chemistry, and
biology have operated throughout geologic time. Geologists can observe that the processes that are
currently shaping, and thus previously shaped Earth, occur very slowly or infrequently and cannot be
accommodated by a historic time scale.
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Why were glacially deposited strata important in the development of continental drift theory? What will be an ideal response?
1867 marked a significant shift in Russian international policy; with the sale of Alaska they abandoned any further land claims in North America
Indicate whether the statement is true or false
There is current concern that the amount of ozone in the stratosphere may be decreasing. Why is a decrease in ozone concentration significant? Describe some of the effects that a decrease in ozone concentration might have.
What will be an ideal response?
The highlighted areas have ________ climate
A) subarctic B) polar C) humid subtropical D) severe midlatitude