Peter: Hello Mai! Can you help me out a little bit?

Mai: Of course, what do you need?

Peter: I want to know how to reduce my energy usage.

Mai: Well, you can turn off the faucets and electrical appliances when not using them. Do you usually take a bath?

Peter: Yes, I do, I love taking a bath.

Mai: You'd better take a shower instead of a bath to save water.

Peter: Oh. Oh no! My water pipes are cracked and water is leaking! What do I do now?

Mai: You should have called the plumber to check it regularly, do it quickly!

Peter: Ok, I'm calling him.

Mai: Uh oh, you turned on so many light bulbs, turn some of them off! Why don't you use some low-energy light bulbs?

Peter: Why do I have to?

Mai: Because they're durable and they keep your electricity bills low.

Peter: Ohh, thank you for the tips! But I wonder what kind of energy doesn't affect the environment?

Mai: It is solar energy and wind energy, they are clean, always available and unlimited.