Pioneer community is the very first community to develop in a formerly bare land. Examples are Lichens and mosses.
Climax community is that final community that develops when the land is already nourished.
I believe the answer is A hope this helps :)
Answer:
I'm pretty sure it's just a fancy rock
It is ribosome just because the other ones are not proteins their cells ribosomes are produced from the endoplasmic reticulum