The chandra x-ray observatory must operate in space because:

a) x rays are too dangerous to be allowed on the ground.
b) x rays do not penetrate earth's atmosphere.
c) x-ray telescopes require the use of grazing incidence mirrors.
d) it was built by nasa.

Find a formal factor that connects egypt to africa to europe and to southwest asia

Astate's representation in the u.s. senate is based on a) equal representation. b) the state's population. c) the state's electoral votes. d) the size of their major cities.this independent regulatory agency was created in 1974 to oversee and regulate the financing of political campaigns in the united states. a) warren cthis independent regulatory agency was created in 1974 to oversee and regulate the financing of political campaigns in the united states. a) warren commission (wc) b) federal election commission (fec) c) equal opportunity commission (eoc) d) securities and exchange commission (sec)

Fossils of glossopteris, an extinct fern, were discovered on which continents to support the theory of continental drift? check all that apply.