Which of the following are minerals that contain valuable substances?
a. gangue minerals
b. longwalls
c. native minerals
d. ore minerals

What is the theme of "the story of the fisherman"?

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted

What is unusual about the iraq mountains ,in spite of their old age?