What Do We Currently Believe Was the Main Source of the Earth's

question 139

Multiple Choice

What do we currently believe was the main source of the Earth's oceans and atmosphere?

• A) impacts by icy planetesimals
• B) outgassing by volcanoes
• C) material directly accreted from the solar nebula
• D) melting and vaporization of polar glaciers

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Definitions:

Asymptotes

Lines that a graph approaches but never reaches, often defining the boundary of its behavior.

Vertices

The corner points where two or more edges meet in a geometric shape or figure; singular form is "vertex."

Ellipse

A plane curve encircling two centers where the total distance from any point on the curve to the two centers remains unchanged.

Center

The midpoint or central point of a geometric shape, or a point that is equidistant from all points on the circumference of a circle or sphere.