1. Meal leftoversWhat happens: These are biodegradable and decompose quickly. If thrown in open areas, they can attract pests and produce foul odors. If sent to landfills, they release methane gas as they rot.2. Banana peelingWhat happens: Also biodegradable. It breaks down naturally within a few weeks to months. In landfills, it contributes to methane emissions if not properly composted.3. TwigsWhat happens: Decompose slowly. When dumped in landfills, they take up space but eventually break down over months or years. They can be composted to enrich soil.4. WeedsWhat happens: Biodegradable and decompose naturally. If weeds with seeds are thrown into open soil or compost, they can regrow and spread.5. Juice cartonsWhat happens: These are often made of mixed materials (paper, plastic, aluminum). In landfills, they take years to break down. If recycled properly, they can be turned into new paper products or building materials.6. Plastic bottleWhat happens: Non-biodegradable and can last hundreds of years in the environment. If thrown away, it contributes to pollution in landfills and oceans unless recycled.7. Glass bottleWhat happens: Non-biodegradable but 100% recyclable. In landfills, it can last thousands of years without breaking down.8. Cartons (plain cardboard)What happens: Biodegradable and recyclable. If kept dry, they can be recycled into new paper products. In landfills, they break down in a few months to a year.9. PaperWhat happens: Biodegradable and recyclable. Decomposes in weeks to months when exposed to moisture. Recycling saves trees and reduces landfill waste.