Pollution can also create costs for the firms producing the pollution. Environmental factors include exposure to air pollution and allergens. Such factors facilitate estimation of emissions from various sources of air pollution. Motor vehicle emissions are one of the leading causes of air pollution. Automobile emissions account for most of the air pollution. He often criticizes industry figures involved in environmental pollution. Aquatic animals are subject to pressure from overfishing, destructive fishing, marine pollution and climate change. Smog is a type of intense air pollution. Gold production is associated with contribution to hazardous pollution. Climate change interacts with other pressures such as habitat modification, pollution and invasive species. These productivity losses are caused by deaths due to diseases caused by air pollution. As ecosystems, estuaries are under threat from human activities such as pollution and overfishing. Officials expressed concern over possible noise pollution and traffic. The song was made to raise awareness about the environment, pollution, and climate change. A subset of surface water pollution is marine pollution.