The principle difference between point source and nonpoint source water pollution is a. whether the pollution is organic or inorganic b. the number of sources of pollution c. the amount of pollution d. whether it is from commercial or agricultural sources

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: