1. If we don't stop destroying the rain forest, many species will lose their natural habitat and disappear.2. Hunting - Rare species will become extinct if illegal hunting continue.
3. Many common fishes including tuna and salmon will not survive if we don't control fishing.
4. If the world continue....
2. We will go skiing if it will snow next month.
3. I'll take shower before I'll go to school.
4. He;ll have driving lessons when he;ll be eighteen.
5. She'll read her book before she'll go to sleep.