The major function of the large intestine is to absorb water from the remaining indigestible food matter and transmit the useless waste material from the body.
The respiratory system cools the muscular system. The respiratory system acts as the support system for the muscular system. The respiratory system brings oxygen into the body for the muscular system to use.
The only explanation I have is that the cells in multicellular organisms are specialized. They all have jobs, like members of a community.
ANSWER:
<u><em>The source of sunlight is the main source of energy and if there will be more sea weed trapping sunlight then there will be a competition between seaweed and coral reef. So, the natural reason for the decreased biodiversity is an overgrowth of the seaweed population which prevents the light from reaching the reef.
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The long-necked giraffes can access more food, so they have a better chance of surviving to reproductive age.
