The lactose (lac) operon in E. coli is an example of a repressed gene when lactose is not available in a cell . In 3-5 sentences, explain what this means using correct terminology please make the answer short

Match the order of the levels of organization in nature with the correct description. example: atoms are fundamental units of matter= level 1levels- 2,3,4,5,6,7,8.now what levels are these? population consists of organismscells consist of moleculesecosystems consist of communities interacting with there environmentmolecules consist of atomsthe biosphere consist of all ecosystems on earthcommunities consists of populationorganisms consist of cells