sort out, to separate one type of things from a group of things, fair trade, the activity of making, buying, and selling goods in a way that is morally right, recycle, to sort and collect rubbish in order to treat it and produce useful materials that can be used again, light bulb, the glass object inside a lamp that produces light , litter, small pieces of rubbish that have been left lying on the ground in public places, garbage, waste material or unwanted things that you throw away, bio-waste, waste that is composed chiefly of organic matter, reusable, able to be used again, rechargeable, able to be charged again, degrade, to change to a simpler form.

New Horizons - B1 - Conversation - Lesson 41 - Introduction

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