C. Urbanization is going on throughout the world.
The correct answer is all of the above. The three choices are all basic components of life that all organisms on earth need to thrive and survive. Water is probably the most important because it is the basic component of life here on Earth.
There is no set number of "lines" of longitude. You're free
to draw as few or as many 'lines' to mark the 360 degrees
of longitude on the Earth's surface.
However many lines you decide to draw on your map or globe,
they ALL cross the equator.
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