recessive gene. recessive gene in Medicine. recessive gene n. A gene that is phenotypically expressed in the homozygous state but has its expression masked in the presence of a dominant gene.
Environmental law. For other uses, see Environmental Law (disambiguation). Environmental law - or environmental and natural resources law - is a collective term describing the network of treaties, statutes, regulations, common and customary laws addressing the effects of human activity on the natural environment. The core environmental law regimes address environmental pollution.
Protection of the environment is managed at the federal and state levels. Air Pollutants, Clean Water, and Safe Drinking Laws The U.S. Environmental Protection Agency (EPA) addresses several issues, from setting limits on certain air pollutants to enforcing federal clean water and safe drinking laws.