1, -There are reuse, reduce, recycle
-Reuse: using something again
-Reduce: using something less
-Recycle: creating some new products from used materials
2,-Recycle:bottles, clothes, paper, can, glass,...
-Reuse:plastic bags, bottles, envelope, clothes,...
-Reduce: noise, rubbish, water, electricity,...
3,-People should cycle and walk, plant trees, use refillable pens and pencils, find creative ways to reuse old items before throwing them away
-People should not throw rubbish, cut down a lot of trees in the forest