Solar Energy from National Geographic Magazine

This is my first article from the National Geographic magazine and it was about solar energy I will just write general information about this article and I leave the rest to you to discover:

Solar energy (now) is becoming one of the most important and continuous sources of energy available to the human race. So many large(WC) research and development effort is underway to develop economical system to harness solar energy and make it a major source of fuel energy especially for the heating and cooling of building.How about: A massive effort in research and development is underway to develop an economical system to harness solar energy.By doing so, sun energy would transform into a major source of fuel energy especially for heating and cooling of buildings.

Also(WC) there are some advantages and disadvantages for the solar energy and the advantages(WC)(benefits/uses) can be concluded as the following: It is nonpolluting, reliable, and free. While the disadvantages(WC)(R) can be concluded(R) as the following: It is very dilute, It is(R) not constant for some applications.

This environment friendly, reliabe and free of cost system demonstrates its positive end.

On the other hand, its dilute and variable nature shows its drawbacks.

Mohammed Sarhan

Mohammad,pleaseeee use a variety of words.

In the last 4 lines, i was confused as to what is the positive aspect and where are the negative points shown.

The introduction was good.Somehow i felt, you lost interest in the end.

You can do much better!

Sincerely,

Mubs