A coral reef is made of<span> thin layers of calcium carbonate. </span>Coral<span> polyps form a living mat over a calcium carbonate skeleton.</span>
Sometimes when the moon orbits Earth, it moves between the sun and Earth. When this happens, the moon blocks the light of the sun from reaching Earth. This causes an eclipse of the sun, or solar eclipse. During a solar eclipse, the moon casts a shadow onto Earth.
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Answer: The relationship between species and distance is that more distance or space has more species and less space has less species.
Explanation:
It can easily be understood by taking the example of the island in such a way that the larger islands contains more species than smaller islands.
There are a diversity of species seen in a bigger islands, more in number and more in variety.
It is very important for the studying the various species and its conservation, protection and other factors.
So, more is the distance , more will be the number of species.