It is A. Those are all decomposers, the other answers like C are all animals. Decomposers are are biotic organisms that break down basically dead plants or animals.
Well yes, but a dichotomous key can be used to classify just about anything you want.
Hope that helped
The scientist that thought he had proven that plants obtain their nutrients from water rather than soil is Van Helmont.
According to the second law of thermodynamics, energy is never 100% efficient because some of the energy disperses as heat.
A good model would be a simple plant taking in sunlight, carbon dioxide (CO2), and water (H2O). Then, releasing glucose and oxygen.
