C. humus
the answer is humus cause it really has nothing to do with soil.
True because thermal energy is mostly always used for a machine
The outermost layer of the Earth is called the crust.
Answer:
Trees will compete with shrubs for light and space so by adapting for increased flammability, chaparral scrubs promote natural wildfires to eliminate their competitors. While these fires destroy the trees, the shrubs are still able to germinate afterwards.
Explanation: