The oldest known fossil bat is from rocks of ________ age. Fill in the blank(s) with the appropriate word(s)
Eocene
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The Kuroshio Current is an example of an eastern boundary current
Indicate whether the statement is true or false
Which of the following solutions can function as a buffer?
A) a solution containing HC2H3O2 and NaC2H3O2 B) a solution containing H2CO3 and NaHCO3 C) a solution containing NH3 and NH4Cl D) all of the above
Judge the following sentence according to the criteria given below: Our planet's extreme climate is one of the main reasons life exists on Earth BECAUSE rapid environmental changes can often result in the death of many life-forms
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
According to Nostrand, Map 10.4, which of the following is NOT part of the seven states that the Corn Belt covered by 1860?
A. Iowa B. Indiana C. Illinois D. Michigan E. Ohio