What are the most valuable marine resources?

a. mineral deposits
b. sand and gravel
c. petroleum and natural gas
d. salts
e. magnesium compounds


c

Environmental & Atmospheric Sciences

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The combined influence of CFCs, methane and nitrous oxide as greenhouse gases is insignificant

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Steam fogs and frontal fogs are both types of ________ fogs

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences

In sub-Saharan African countries hit hard by HIV/AIDS, ________ have dropped most sharply

A) crude death rates B) crude birth rates C) life expectancies D) migration rates E) dependency ratios

Environmental & Atmospheric Sciences

Soil air supplies plants and microorganisms with what gases needed for life processes?

a. nitrogen and helium b. oxygen and methane c. carbon dioxide and oxygen d. nitrogen and carbon dioxide

Environmental & Atmospheric Sciences