Define waste?

Waste refers to any material or substance that is discarded or no longer needed, typically because it is no longer useful or has served its purpose. Waste can include solid, liquid, or gaseous materials that are generated from various human activities, such as manufacturing, agriculture, and household consumption. Improper disposal of waste can have negative environmental and health impacts.

Waste refers to any substance or material that is discarded, rejected, or no longer needed. It encompasses a wide range of items, including:

- Solid waste: Includes household trash, commercial and industrial refuse, construction and demolition debris, and sewage sludge.
- Liquid waste: Composed of wastewater from households, industries, and agricultural activities.
- Gaseous waste: Consists of emissions from vehicles, factories, power plants, and other sources.
- Hazardous waste: Poses risks to human health or the environment due to its toxicity, corrosiveness, reactivity, or flammability. This includes chemicals, solvents, heavy metals, and radioactive materials.
- Biodegradable waste: Includes organic materials that can be broken down by microorganisms, such as food scraps, plant trimmings, and paper products.

Waste can be generated from residential, commercial, industrial, agricultural, and institutional activities. It can have significant environmental, economic, and social impacts if not properly managed.