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.
The sunlit region near the surface in which photosynthesis can occur is known as the photic zone. The photic zone may be as deep as 200 meters in tropical seas, but just a few meters deep or less in rivers and swamps. âThe physical and chemical structure of the ocean provides habitats that marine organisms depend on.hotosynthetic algae, called phytoplankton, live in the photic zone. Zooplanktonâtiny free-floating animalsâeat phytoplankton. This is the first step in many aquatic food webs. Below the photic zone is the dark. aphotic. zone. , where photosynthesis cannot occur.