Reduce, reuse, recycle
Many materials, like metals and the oil used to make plastic, come from the ground and cannot grow again. We can look after them with the three Rs.
Use less. Take your own bag to the shop and buy fruit without plastic packaging.
Use things again. Keep glass jars for pencils or leftovers, and use both sides of the paper.
Put glass, paper and cans in the right bin, so they can be made into new things.
Use has/have + past participle to talk about a result, and because to explain it with science: The glass has broken because glass is fragile. The apple has fallen because of gravity. The shelf hasn't bent because wood is rigid.