Answer:
Nonrenewable energy resources, like coal, nuclear, oil, and natural gas, are available in limited supplies. This is usually due to the long time it takes for them to be replenished. Renewable resources are replenished naturally and over relatively short periods of time.
The source of all energy in the pyramid in model one is the hawk
The group of plants that is most successful would probably be Angiosperms! They're also known as flowering plants or anthophytes.
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