What is an succession? (69) points HELP!

A number of persons or things following one another in order or sequence.

there is nothing like succession in chemistry but in biology and it means the process of getting to the climax state in ecological succession

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

i think so it’s will be b yes i believe its