Over the Last Century and a Half, the Main Source

question 31

Multiple Choice

Over the last century and a half, the main source of increased atmospheric carbon dioxide has been ________.

• A) volcanoes
• B) photosynthesis
• C) photoperiodism
• D) rock decomposition
• E) burning of fossil fuels

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Definitions:

Foreclosure Rates

The frequency at which properties are forced to be sold due to the owner's failure to pay the mortgage.

Down Payment

An initial, upfront partial payment for the purchase of expensive items/services, typically associated with the purchase of a home or vehicle.

Freddie Mac

A public government-sponsored enterprise (GSE) that operates in the secondary mortgage market to increase the availability and affordability of home loans.

Fannie Mae

A government-sponsored enterprise established to expand the secondary mortgage market by making mortgages more accessible and affordable.