The practice of law in the domain of environmental protection is broad and changing quickly. It has long been believed that this area of law covers both the conservation and allocation of natural resources as well as the two major areas of regulating pollutants. It now encompasses international environmental governance, corporate law, international commerce, environmental justice, sustainable growth and development, food law, and climate change in addition to touching on energy, agriculture, real estate, and land use. A thorough understanding of administrative law is frequently necessary for environmental legal practice, as well as knowledge of tort law, property law, legislation, constitutional law, and land use law.