An increase in population makes excessive demands on natural resources, and increases the demand on agriculture and livestock. There are many negative impacts associated with population explosion.Using chemical fertilizers, insecticides and herbicides to increase production actually pollutes the air, soil and water with toxic chemicals. Fertilizer run-offs cause toxic algal blooms that kill aquatic animals.Removing trees and other plants to increase areas of cultivation causes habitat loss and threatens the survival of numerous species of animals and plants.Monoculture keeps cost of production low, but it reduces biodiversity and negatively impacts the soil.Large scale farming of animals increases their susceptibility to diseases such as Mad-cow disease and avian flu, for example. Waste generated in the farms and meat processing plants can affect the water quality in the area.The greater distance food items have to travel to reach the consumer, the greater that transportation's impact is on the environment.Unfortunately, humans are the most polluting species. Earth is very good at recycling waste, but we are generating far more than earth can cope with. Pollution occurs at different levels and it doesn't just impact our planet; it impacts all species, including mankind, who dwell on it.