a windmill collects energy from the wind
If we didn't have sun's energy there wouldn't be life on earth.Sunlight is what plants eat. Animals and bugs eat the plants that have sunlight in them. Humans and other animals then eat the bugs and the animals that ate the plants. Indirectly every living thing has sunlight feeding it.
Hope this helps!
sitting in a chair getting hit with a reflex hammer in the knee
Relative date , which fossils in layers of rocks are placed in order from older to younger.
radiometric dating ,allows actual ages of actual rocks to be determined