Answer: Ecological succession is the process that describes how the structure of a biological community (that is, an interacting group of various species in a desert, forest, grassland, marine environment, and so on) changes over time.
Explanation:
This picture might help you if this doesn't help you try looking it up online
Answer:
I think it is the first option however if that is wrong it may be the third I highly doubt that it is the second or last options.
Explanation:
Sorry I couldn't pin the exact answer haven't been in biology in a couple of years.
Skin is always the first line of defence
