Answer:
O coral bleaching
Explanation:
Without the algae, corals lose their color and turn white. This is called “coral bleaching “.
Of poor water hygiene and management
<h2>Answer </h2>
Option C - Secondary Succession
<u>Explanation </u>
Secondary succession occurs in an ecosystem after a lava flow has completely covered the surface of an area of land. Secondary succession is a method originated by an incident that decreases an already organized ecosystem to a less group of varieties and secondary succession happens on pre-existing clay example forest fire, harvesting, hurricane, and similar. It is a succession is the type of succession which can take place after the destruction of the area. Examples include areas which have been cleared of existing vegetation.
Theory of plate tectonics hun because of convection currents the plates move
