Work in pairs to solve the quiz.

It takes about _______ years for one plastic bottle to decompose in the ground.
1. 4.5
2. 45
3. 450
Around _______ plastic bottles are thrown away every year.
1. 13 thousand
2. 13 million
3. 13 billion
Plastic bags and other plastic waste kill around _______ sea animals every year.
1. 100 million
2. 10 million
3. 1 million
Nearly _______ of plastic ever made still exists today.
1. 100%
2. 50%
3. 10%