Review Standard Training for Rural Letter Carriers On-the-Job Training Guide, #10024380 and Standard Training for Rural Letter Carriers Participant Guide, #10024378 to become familiar with the materials.
Pelagic Zone. that part of a lake, sea, or ocean that is the habitat of pelagic organismsâplankton, necton, and pleuston.The pelagic zone is opposed to the benthic zone, that is, the bottom of the body of water, which is inhabited by benthos.In oceans and seas, the pelagic zone is divided horizontally into two regions: the neritic (water above the shelf) and the oceanic (all the remaining water).elagic Zone. that part of a lake, sea, or ocean that is the habitat of pelagic organismsâplankton, necton, and pleuston.
Photic zone. The photic zone, euphotic zone, or sunlight zone is the depth of the water in a lake or ocean that is exposed to sufficient sunlight for photosynthesis to occur. It extends from the surface down to a depth where light intensity falls to one percent of that at the surface, called the euphotic depth.