When biologists refer to algae as a polyletic organism, what are do they mean?

organisms descended from more than one ancestor since algae has association with multiple other organism.

Explanation:

not sure if this is what you'r looking for eubacteria and archaebacteria

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: