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.
Many red algae deposit calcium carbonate into their cell walls, making them hard (and excellent fossils). Class, Subclass, and Order. All red algae belong to the class Rhodophyceae. Traditionally, this class has been divided into two subclasses, the Florideae and the Bangiodeae.