1. Definetely yes. Because there is not many bulky factories emitting a large amount of emissions. Morever, fewer vehicles which means less noisy and air pollution. Children can even play on the street without paying much attention.

2. Well, i partly agree with this idea. Because nowadays, plastic bags has played a vital role in our daily lives, they are cheap and convenient so it's very hard to ban these things. Instead of doing that I think we can reduce using plastic bags by paper or fabric bags when it's in suitable situation is a much better idea.

3. Hybrid cars use both electricity and fuel to operate so it's clear that they will emit less emissions which means less pollution. Additionally, hybrid cars make less noise because they don't always use 100% their engine to operate

4. It is clear that  alternative fuels helps human to protect the environment. Using them instead of fossil fuels can reduce a large amount of emissons.

5. Because nuclear energy is such a deadly and dangerous type of energy. Using it without paying attention or lacking estimation can lead to a great deal of consequences.