Q7 of 62 Page 111

Species diversity decreases as we move away from the equator towards the poles. What could be the possible reasons?

species diversity decreases as we move from equator towards the poles because sunlight is less visible due to slanting rays of the sun but at equator posses straight rays of sunlight due to which vegetation of tropical region is much high than the polar regions. Polar regions are generally covered with snow till 6-7 metre. So top soil is completely out of
vegetations due to snow and the chilled climate forms ice bergs in the seas.

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