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Nutrients in coral reefs are recycling efficiently because the water is so shallow. Coral reefs are generally located along tropical coastlines, in open ocean deserts. They thrive in tropical, low nutrient waters because there is no phytoplankton in there. They are home to a large number of species,
Answer: Flatworms, Roundworms and Segmented worms
Explanation:
These are not all placed in a phyla because the degree of developmental and morphological similarity is low.
The flatworms also known as platyhelminthes do not have coelom, no respiratory system or a circulatory system. An example is the tapeworm.
The roundworms also known as nematodes are slightly more complex than the flatworms in that they have a pseudocoelom and they are bilaterally symmetrical. An example is Ascaris lumbricoides.
The segmented worms are the most complex of them in that they have a true coelom, a circulatory system found in each segment and a digestive system. An example is the earthworm.
Answer:
C, D, A, B, E
Explanation:
The sudden decrease or increase in the potential of cell membrane is Action potential. The stimulus (local current) allows change in the membrane potential, thus allowing depolarization of the membrane. This initiates the opening of Voltage Gated Na+ channels. The sodium starts entering the cell that is influx of Na+ and thus AP generated in adjacent axon segment. The sodium channels inactivates by membrane repolarization and activated pottassium channels allows the efflux of pottassium ions. The inactivation of potassium channels occurs by hyperpolarization ( low membrane potential) brings the membrane to its resting state. Thus, the correct order is C, D, A, B, E.
Equilibrium means D, all of the above
