When two tectonic plates collide/converge, usually a continental and an oceanic plate, the oceanic plate is submerged by the tectonic one because it is denser. The plate dives into the mantle and is consumed. The boundary, therefore, keeps ‘eating’ up the oceanic plate hence reduces it over time. An example is the Mariana Trench (a subduction zone) in the Pacific ocean. The Pacific ocean, therefore, continues to shrink over time.
On the other hand, divergent boundaries (such as the one in the Atlantic Ocean) make new crust.
The magnesium is a toxic and poisonous substance that results from a continuous exposure of the substance and the chronic exposure a lead to the psychiatric and motor disturbances as the reduction in the speed ad the mood changes, and the other behavior patterns.
<u>As magnesium is known to cause the side effects on the kidneys, and the liver function and the chances of the acute toxicity are always high. Those animals that produce offspring have a malformed body.</u>
