Protecting the environment is an important thing in the world. First, we can use recycled bags to reduce the waste. We shouldn't throw trash everywhere, and we need to put trash in the trash bin. Sometimes, we can reduce air pollution by cleaning up the park with my family and friends. Final, their actions shows that when we protect the environment, nature become even more beautiful.

1. It is hard to go outside during the heatwave last week.

2. Air pollution in big cities can lead to serious healthy problems.

1. Unless this store sells emergency kits, I will check the other one.

2. If you throw trash into the river, it will become more polluted.

3. The factory is dumping waste in it, so this lake is polluted.