Answer:
coal
Explanation:
wind and water never end so they're renewable and the sun like ofc also never ends
but you can run out of coal
1. Polymer refers to a lengthened, chain-like molecule comprising repeated units associated end to end.
2. Ceramic refers to a hard, brittle, corrosion and heat tolerant substance formed by administering a non-metallic mixture of minerals to intense heat.
3. Thermoset refers to the plastics, which exhibit low elongations and cannot get recycled again.
4. Thermoplastic refers to the plastics, which exhibit high elongations and can be recycled.
5. Crystal refers to the solid form originating from the organization of ions, atoms, or molecules in precise patterns of geometry.
6. Composite refers to a carbon fiber entrenched in a polymer resin matrix.
Easy. HISTORY or GEOGRAPHY books of specific areas you want to know more about.
A community is diverse species living together
An Ecosystem is all the living and nonliving factors that affect an organism
