What do geologists usually use to determine the numerical age of rocks?
a. Isotopic dating
b. Index fossil
c. Level of SiO2 in the rock
d. Both a and c
Answer: a. Isotopic dating
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What country was the first to found an oceanographic institution to meet some of the demands associated with scientific oceanography?
A) United States B) England C) Japan D) Monaco
Sustainable management and harvesting of forests is certified by the
a. U.S. Forest Service b. California Conservation Core c. Forest Stewardship Council d. Convention on International Trade of Endangered Species e. Endangered Species Act
________ is defined as travel to a place outside one's usual residential environment and involving a stay of at least one night
Fill in the blank(s) with correct word
As forest cover has been rising due to the PSA, how has per capita income responded?
What will be an ideal response?