(of substances, esp toxins) to build up within the tissues of organisms
any effect on, interaction with, or response from living tissue. adjective (of a substance) having or producing an effect on living tissue bioactive (bī’ō-āk’tĭv) Relating to a substance that has an effect on living tissue.
noun the oxidative treatment of raw sewage by aeration
noun (functioning as sing) the use of aircraft in the discovery, development, and protection of natural and biological resources
noun the branch of archaeology that deals with the remains of living things