4.
Explain how salinity changes the movement of ocean currents.

Deep ocean currents

Differences in water density, resulting from the variability of water temperature (thermo) and salinity (haline), also cause ocean currents. ... Dense-cold-salty water sinks to the ocean bottom. Surface water flows in to replace the sinking water, which in turn becomes cold and salty enough to sink.

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the answer is yes, they are born/created, then they grow to their limit then produce offspring, then die.

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.