What are the different types of pollution?

• A. Air, Sea and Land
• B. Air, Water and Soil
• C. Air and Water
• D. Water and Noise

Answer: (A)

Pollution is usually understood as contamination of the environment by substances or energy, and we talk about it in terms of the medium it affects. The three broad environments we focus on are air, water, and land. The option that lists air, sea, and land matches these three media, with sea representing the water environment. This captures the main ways pollution is categorized: air pollution affects the atmosphere; water pollution affects oceans, seas, and other bodies of water; and land pollution affects soils and terrestrial ecosystems. Examples help ground this: air pollution comes from car and factory emissions; water pollution from oil spills or plastic litter in seas and rivers; land pollution from waste, pesticides, and soil contamination. The other options either miss one of these media or introduce a different type of pollution (like noise) that isn’t a medium-based category.