4 interview and choose the correct answers.
1 Recycling is part of the two / three 'Rs.
2 We usually use plastic bags once / twice before we throw them away.
3 Each year 100,000 / 1 million marine animals die because of plastic bags.
4 Most plastic bags are biodegradable/ non-biodegradable.
5 It can take up to 1,000 / 100 years for a plastic bag to decompose.​