Soil air supplies plants and microorganisms with what gases that are needed for life processes?
a. nitrogen and helium
b. oxygen and methane
c. carbon dioxide and oxygen
d. nitrogen and carbon dioxide
c
Environmental & Atmospheric Sciences
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Which Central American country has established a system of reserves and national parks that, by 2008, has included about a quarter of its land, and is at the forefront of biodiversity conservation?
A. Nicaragua B. Costa Rica C. Panama D. El Salvador E. Honduras
Environmental & Atmospheric Sciences
Distribution of temperature during the year:
Environmental & Atmospheric Sciences
Explain why Mercury, Venus, and Mars lack plate tectonics. What will be an ideal response?
Environmental & Atmospheric Sciences
Which locations are composed of loose materials (not bedrock)?
A. 2 and 4 B. 3 and 4 C. 1 and 2 D. 1 and 3 E. 2 and 3
Environmental & Atmospheric Sciences