Question

Introduction: Over 80% of our energy comes from the burning of fossil fuels such as oil, gas, and coal. Fossil fuels are fairly cheap and plentiful, but there are several problems:

Fossil fuels are nonrenewable resources. That means there is a limited supply. Once the world runs out, there is no way to get more.
Burning fossil fuels adds carbon dioxide to the air. Most scientists agree that this causes the gradual warming of Earth’s climate, or global warming.

Question: What types of energy do not harm our environment?

Describe: Four examples of renewable resources are featured in the Energy Conversions Gizmo. These resources are produced all the time, so they will not run out. Read about each energy source, and then explain how each is produced in your own words.
A.
Wind power:

B.
Water power (also called hydroelectricity):

C.
Solar power:

D.
Ethanol:

On your own: Learn more about one of these renewable resources using the internet or by reading library books. Explain its advantages and disadvantages to your teacher and class.

Answer 1

D because I had this on a test and got it right

Answer 2

So your answers would be, A ( wind power) , B(water power), C ( solar power)

A ( wind power) is produce by blades to collect kinetic energy from the wind. The wind puts lift on the blades, causing them to whirl.The blades are connected to a drive shaft that spins an electric generator that generates electricity.

B ( water power) is produced by water power plants, water flowes through a pipe and pushes the blades causing a turbine to spin and to produce eletricity.

c ( solar power) is cause by " nuclear fusion" which takes place in the sun. Protons from hydrogen atoms fuse to generate helium atoms when they collide violently near the sun's core. This process, known as a PP (proton-proton) chain reaction, generates a tremendous amount of energy.

Step-by-step explanation:

i hope this is what u were looking for :D

( also be careful with the water power, water can run out and we will have no more left so)