Earth's second atmosphere formed from ________

A) leftover gases from the nebula
B) the Sun's solar wind
C) outgassing
D) comet vaporization


C

Environmental & Atmospheric Sciences

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Volcanic eruptions are one of the few natural hazards that have no benefit to humans

Indicate whether the statement is true or false

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Coral reef populations are threatened by all of the following except ________

A) parasitic algae that break down calcium carbonate B) increased ocean acidity C) fishing D) increased ocean temperatures

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In which of these locations, all other factors being equal, would limestone most quickly weather?

A. Florida B. Wisconsin C. Wyoming D. Arizona E. Maine

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