B. Bacteria
The bacteria break the dead leaves down and release the nutrients back to the soil.
According tom Lichens, represented by this symbiotic relationship, are responsible for primary succession <span>or the establishment of a new site for plant growth. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has helped you.</span>
Acid causes metals to corrode
The answer to this question is Neurotransmitter
Neurotransmitter will create a chemical change inside our body as a response to each situation that we face. This response then will be transmitted toward our body and will determine what we should do next, (this process will be a lot easier to observe during dangerous fight or flight situations)
