The two most common elements in Earth's crust are ____________________ and ____________________
Fill in the blank(s) with correct word
oxygen, siliconsilicon, oxygen
Environmental & Atmospheric Sciences
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In general, what has spurred the use of renewable energy, and what are the benefits of its use in environmental and economic terms?
What will be an ideal response?
Environmental & Atmospheric Sciences
About when did glaciers on the highest mountains and in Greenland begin melting more rapidly?
a. ?1700 b. ?1900 c. ?1930 d. ?1960 e. ?1980
Environmental & Atmospheric Sciences
The inner planets are the smaller rocky planets that are close in proximity to the sun
Indicate whether this statement is true or false.
Environmental & Atmospheric Sciences
The ___________ are a group of amphibians named for the wrinkling and folding of the chewing
surface of their teeth. Fill in the blank(s) with the appropriate word(s).
Environmental & Atmospheric Sciences