Can tell me the answer

Which characteristics are true of the arabian desert? multiple answers choose all answers that are correct. a. is mostly below sea level b. covers almost the entire arabian peninsula c. contains the largest sand sea in the world d. has very few people living there

Which was not a country that massively built up its navy in the early 1900s? germany china united statesbritain

The graph below plots the temperature and luminosity of stars on the main sequence.