What are the three most abundant gases in Earth's atmosphere?

What will be an ideal response?


Nitrogen, N2
Oxygen, O2
Argon, Ar
The argon, 40A, is released by the radioactive decay of 40K in Earth's crust and mantle.

Environmental & Atmospheric Sciences

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How do caves and caverns form in limestone?

What will be an ideal response?

Environmental & Atmospheric Sciences

Instructions: Choose one answer from each pair of selections. Do the chlorofluorocarbons (CFCs) in the atmosphere come from NATURAL or SYNTHETIC sources?

Environmental & Atmospheric Sciences

In addition to colonizing Quebec and the St. Lawrence River Valley, the French colonized northern New England

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

The maximum daily temperature usually occurs: a. a few hours after the time of maximum solar heating

b. at the time of maximum solar heating. c. a few hours before the time of maximum solar heating. d. when clouds begin to form.

Environmental & Atmospheric Sciences