The correct option is A.
The nature is organized in such a way that, one organism's waste is what the other organism will use as its own resources. For instance, during the process of photosynthesis, the oxygen that is produced as the by product of the photosynthesis process is what humans use to carry out their own breathing process.
<span>(1) producers, (2) consumers, and (3) decomposers. hope this helps </span>
The answer is A, 'a mammal' because it goes with the copulative verb 'to be', i. e., 'is'.
The first organisms to grow in new or disturb areas is called pioneer species.
