"Gas bladders" and lungs are similar organs, although they serve different functions.
Both of them develop from a location in the upper throat i.e. the pharynx and are used to manipulate gases. They both contain a good blood supply.
However, the lung is used for breathing and is often found in land vertebrates, while on the other hand, the gas or swim bladder is used in the regulation of buoyancy and the latter is found in all other bony fishes e.g. perch.
Perch use the swim bladder to control their buoyancy by filling it with oxygen from their gills using a gland, which is known as a gas gland. This expands the bladder, thereby pushing the fish toward the surface of the water.
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Answer:
Flaccid paralysis.
Explanation:
Demyelinating disease may be defined as in which the protective layer of myelin sheath gets damaged. This causes the slow down or even stops the transfer of nerve impulse.
Flaccid paralysis is the neurologic condition that results in the reduced muscle tone due to damage in the nerves of the muscles. The contraction is inhibited in the flaccid paralysis. The demylination results in no contraction at all as occur in flaccid paralysis.
Thus, the answer is flaccid paralysis.
Answer: D. downwelling
Downwelling is a oceanographic phenomena, in which the higher density material accumulates and sink below the low density water. The higher density sediments from the surface runoff sink down. The downwelling provides the supply of oxygen to the lower water layers along with the minerals present in the sediments. This allows the aerobic organisms to survive underwater. Therefore, Pedro should read the phenomena of downwelling to understand the fact that how aerobic organisms survive under water.
Answer:an earthquake
Explanation:an earthquake is a violent shaking of the ground and it also creates greate destruction
