Which term refers to the process of carbon gases being emitted by burning fossil fuels, which exceed the amounts the natural system can absorb, causing carbon dioxide to rise in the atmosphere and trapping solar energy in the lower atmosphere?

a. global warming

b. acid deposition

c. ozone depletion

d. kyoto protocol

Based on my knowledge of the subject, I believe the correct answer is global warming...a.k.a...the greenhouse effect(similar). 

Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].