Geographic Earth materials modified over time by physical, chemical, and biological processes that serve many functions are considered . A)
equatorial parent materials
B)
modified soil horizons
C)
modified atmospheric materials
D)
nurtured dominant structures

the answer is:

carbon dioxide

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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: