1. soon polar bears will be an endangered/extinct species.
2. in the future rivers will melt/dry up.
3. some animals migrate/survive to warmer places in winter
4. seabirds hunt / feed on fish
5. we should try not to lose/waste energy
6. global warming is causing/changing the world
7.volcanoes explode/erupt
8. temperatures will drop/reduce
9. in the 1960s,there were few bald eagles in the nature/wild
1. will forests disappear in 2100?
2. i need some money i will lend you some
3. a lot of animals won't be extinct soon
4. many people won't survive a supervolcano eruption
5. john will come he is busy