Why does the environmental protection agency establish emission guidelines for car exhaust?A)to maintain low air pollutions levels B)to maintain high air pressure levels C)to maintain consistent water supplies D)to maintain consistent cloud formations.

A.)

Explanation:

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D)to maintain consistent cloud formations.

Explanation:

i think its y= -4x-14

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: