Question

define 1.pelagic zone. 2. lentic zone . 3.benthic zone. 4. littoral zone​

Answer 1

Answer:

The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. Organisms living in this zone are called benthos and include microorganisms (e.g., bacteria and fungi)[1][2] as well as larger invertebrates, such as crustaceans and polychaetes.[3] Organisms here generally live in close relationship with the substrate and many are permanently attached to the bottom. The benthic boundary layer, which includes the bottom layer of water and the uppermost layer of sediment directly influenced by the overlying water, is an integral part of the benthic zone, as it greatly influences the biological activity that takes place there. Examples of contact soil layers include sand bottoms, rocky outcrops, coral, and bay mud.

Answer 2

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• The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth
• Lake ecosystems are a prime example of lentic ecosystems. Lentic refers to stationary or relatively still water, from the Latin lentus, which means sluggish. Lentic waters range from ponds to lakes to wetlands, and much of this article applies to lentic ecosystems in general.
• The benthic zone is the ecological region at the lowest level of a body of water ... Bacterial Biogeochemistry: The Ecophysiology of Mineral Cycling, 3rd edn
• The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. In coastal environments, the littoral zone extends from the high water mark, which is rarely inundated, to shoreline areas that are permanently submerged

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