determine the energy of an ejected electron; is wave length, its frequency and wave number for the first three spectral lines of lyman series.​

Earths place in space 

The peak above is part of the  sierra madre occidentals ,  a chain of volcanic mountains that runs through the middle of central america. 

Most of the land is used for housing/commercial uses

The telegraph idk what else to tell you you are probably just gonna copy it which btw i would do the same thing but it says i have to have at least 20 characters so yeah there you go