As a senior prefect write a speech that will be delivered at your schools speech and prize giving day

The covers all of earth like a thin shell,but it is not a solid sheet of material.it is broken up into several large sections and many smaller ones. fill in the blank.

8. is a technique that uses the images from several telescopes to produce a single image. a. reflection b. interferometry c. radiation d. refraction

Name two factors that, "power of magnetic field " of earth.