6.target grammar:first conditional with unless.

look at the example and the circle the correct option.
we won`t stop global warming unless we make a lot of changes..
a.global warming will stop if we make changes.

1.-the oceans will probably rise unless global warming continues.
2.-the oceans probably won`t rise if global warming continues.
3.- more trees and lakes will die unless we stop acid rain.
4.-more birds and finish will die if we don`t stop water pollution.