Vehicle exhaust, particularly from diesel engines, is a major contributor to air pollution in urban areas due to the release of harmful pollutants such as particulate matter, nitrogen oxides, and hydrocarbons.

Water pollution occurs when harmful substances, such as chemicals, sewage, or industrial waste, are introduced into water bodies, affecting water quality and aquatic ecosystems.

In agricultural areas, the excessive use of fertilizers and pesticides can lead to soil pollution by contaminating the soil with chemicals and disrupting soil ecosystems.

Carbon dioxide is a greenhouse gas that traps heat in the Earth's atmosphere, contributing to the phenomenon of global warming and climate change.

Bioaccumulation refers to the process by which pollutants accumulate in organisms at higher levels of the food chain, increasing in concentration as they move up the chain.

Solar energy is a renewable energy source that harnesses the power of the sun to generate electricity.

Bioremediation is the process by which natural ecosystems, such as wetlands or forests, break down and remove pollutants from the environment.

Agricultural expansion, particularly for large-scale farming, is a major cause of deforestation as forests are cleared to make way for agricultural land.

Phytoremediation is the process by which plants absorb and remove pollutants from the soil, using their natural metabolic processes to break down and detoxify contaminants.

Oil spills, resulting from accidents or intentional discharges, are a major source of marine pollution, contaminating water and harming marine ecosystems.

Environmental transport refers to the process by which pollutants move from one environmental compartment, such as air, water, or soil, to another.

Agricultural activities, such as the use of fertilizers and pesticides, as well as livestock farming, can contribute to air pollution in rural areas, releasing harmful gases and particles into the atmosphere.

Bioremediation is the process by which microorganisms, such as bacteria and fungi, break down and remove pollutants from the environment, converting them into harmless substances.

Traffic noise, particularly from vehicles and horns, is a major source of noise pollution in urban areas, affecting the quality of life and causing health issues.

Bioaccumulation refers to the process by which pollutants are taken up and accumulated by living organisms from the environment, often through the food chain.