Answer:
The answer should be C: mostly in the 20th century
Explanation:
Cant tell you the types, but they form from the weather elements, from being compressed, etc
Answer:
An energy pyramid is a model that shows the flow of energy from one trophic level to the next along a food chain. The pyramid base contains producers—organisms that make their own food from inorganic substances. All other organisms in the pyramid are consumers
Explanation:
