Meal leftovers – Biodegradable. When thrown away, they become smelly and decompose. They can be turned into compost.Banana peeling – Biodegradable. Becomes waste that can be used as fertilizer.Twigs – Biodegradable. They decompose and can be used as firewood or compost.Weeds – Biodegradable. Can also be turned into compost but decompose quickly.Juice cartons – Non-biodegradable. When thrown away, they become litter and are hard to decompose. They can be recycled.Plastic bottle – Non-biodegradable. When not recycled, they cause pollution.Glass bottle – Non-biodegradable. They do not decompose but can be recycled repeatedly.Cartons – Recyclable. When discarded, they can be processed to become paper again.Paper – Recyclable. It also decomposes and can be turned into compost or recycled paper.