Ways HW enter the environment

1. Airborne: Airborne hazards enter the environment when pollutants and other toxins are released into the atmosphere through emissions such as smoke, ash, dust, and gases. These airborne pollutants can be transported and dispersed over long distances, affecting both local and global environments. 2. Waterborne: Waterborne contaminants enter the environment through discharges of industrial and domestic wastewater, agricultural runoff, and urban stormwater. These types of pollutants can have adverse impacts on water resources, marine habitats, and the individuals and creatures that inhabit them. 3. Land-based: Land-based hazards include waste generated from manufacturing processes and industries, hazardous materials from chemical plants, pesticides from agricultural applications, and litter from households and businesses. These pollutants contaminate soils and may eventually end up in water resources, such as rivers and lakes. 4. Nonpoint Source Pollution: Nonpoint source pollution occurs when pollutants enter the environment through indirect pathways, such as runoff from urban and agricultural areas. This pollution can be difficult to track because it is often the result of numerous small-scale sources which may not be immediately apparent.