Como vemos a terra resumo

Earth is the third planet from the Sun and the fifth largest in the Solar System.Its shape is practically spherical, with a deformation that causes a flattening of the poles.As far as we know, the planet on which we live is the only one in our solar system capable of harboring life as we know it.

Explanation:

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.