We only see receivers of light because

a. light is absorbed by them.
b. light reflects off of them.
c. they give off their own light.

The answer is B.

You can not see light unless it shines on something else. The colors that you see in objects are the colors that are refracted from the material. If it absorbs the color then the waves won't transmit to your eyes.

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the