Therefore or Unless

I have eaten a lot of pizza ____________ I am full.

You will not pass the test ____________ you work hard.

People use bluefin tunas to make sushi _____________ there are very few bluefin tunas left in the sea.

Whales will get sick and die __________ people stop dumping waste into the sea.

People cut off sharks's fins for shark fin soup _______________ many sharks drown.

Sara won't have any friends _________ she is nice to her classmates.

Rhino will become extinct ____________ people stop hunting them for their horns.

People keep destroying bamboo forests _____________ pandas do not have enough bamboo to eat.

It rained heavily ____________ the children didn't go to the park.

Pandas do not have enough bamboo to eat _______ people stop destroying bamboo forests.