Удельная теплота сгорания пороха меньше удельной теплоты сгорания дров.почему же

I don't how recycling is organised in my home town. At first we recycled paper, cans, cartons and glass. Now we are told not to to recycle, because the bins are full. We are not allowed to recycle. Where my cousin lives, they are asked to recycle plastic bottles, paper and cartons - and her bin is half empty. Why don't people organise recycling properly? Помогите перевести