Choose the correct words

1. If we do not stop illegal hunting, the Siberian tigers will become [endangered|extinct] soon enough.
2. [Smoke|Smog] is a major reason for air pollution in metropolitan cities and capitals.
3. Every city and even a small town produces numerous tons of household [litter|waste] annually.
4. Many people check weather [forecast|prediction] before going out in the morning.
5. Due to human activities, the [weather|climate] changes greatly. The consequences of such actions might bring a lot of harm.
6. It is always pleasant to live in a safe neighbourhood with [clear|clean] streets.
7. People try to cope with ecological issues [global|worldwide].
8. Scientists believe that we must [reuse|reduce] the consumption of natural resources