Old car tyres Car tyres are a big problem for the environment because they are non-degradable. If you just store them under the ground, they can give off toxins and chemicals into the earth around them. The good news is that rubber tyres can be reused in many different ways: ● You can use them for the sides of boats to stop them from crashing into the harbour walls; ● You can use them for children's play equipment; ● You can make old tyres into computer mouse mats, pencil cases, and notebook covers; ● You can reuse them as carpet mats and tiles .Several carpet manufacturers use recycled tyres as a major part of their carpets. To reduce your tyre waste, look after your tyres: ● Buy good quality tyres that have a long life; ● Don't drive on tyres that are too hard or too soft; ● Change the position of your tyres from the front of the car to the back of the car every 6,000 miles. When it's time to replace your tyres, either take your vehicle to a vehicle service shop that recycles tyres(they may charge a small fee for the recycling part of the service)or, if you replace the tyres yourself, find out where you can take your old tyres for recycling. In some areas, tyre shops will take them back for a small fee. Choose the correct endings. If you just put your old tyres under the ground, they can _________.