Community gardens can help reduce pollution.
Buying food from other countries/areas means that it needs to be transported here in vehicles. Vehicles produce pollution when they use petrol or diesel. The food also needs to be packaged in plastic to keep it fresh.
Growing our own food will mean we wont have to buy as much food from other countries, so plastic and fuel pollition will be cut down. Cutting down on fossil fuels will help stop climate change, and cutting down on plastic pollution will help save aminals.