Human activities like farming, grazing, forestry, landfills, and industry often disturb the natural environment and negatively impact plants and animals by clearing away habitats. Nature preserves are important for protecting ecosystems and the habitats of many living things by preventing the use of land for human production and waste storage. However, even our food choices can affect wildlife through the removal of habitat for agriculture and the use of chemicals that pollute water sources and remove sources of food and shelter for animals.