There are several circumstances in which you should walk away from an extended warranty on a used car. One is obvious: If the car is still covered by the manufacturer warranty, we strongly caution against buying an extended warranty.
Oscillatoria blue green algae that is motile by gliding. Pediastrum duplex . Possibly Pediastrum duplex Pediastrum boryanum ? Pediastrum sp. are planktonic green algae with flat, plate like cluster of cells with one or two points. They come in many different variations. The colonies usually contain 8 to 32 cells, with examples of 4, 64 or occasionally 128.
Definition. The term âzooxanthellaeâ refers to a paraphyletic group of yellow-brown microalgae, including certain dinoflagellates, diatoms, cryptophytes, chrysophytes (golden algae), and rhodophytes (red algae), that are found in mutualistic symbiosis with a variety of invertebrate and protist hosts. cells per m 2, but due to their small size (10 Î¼m diameter) their overall biomass on reefs is low. Because they are so important to the construction, evolution, and ecology of coral reefs, zooxanthellae can be regarded as keystone species on coral reefs â perhaps the only protists to play such a role.