ai giúp mình với, plz !!!
Điền từ thích hợp vào chỗ trống.
1. __power is generated from water.
2. People use low energy ___________ to reduce electricity bills.
3. When we burn fossil fuels, __ is produced.
4. ____________ are used to get energy from the sun.
5. We have a big carbon ___ if we use energy that produces a lot of carbon dioxide.