In order for a solar eclipse to occur, the earth, moon, and sun must a) form a right angle with the moon in the middle. b) form a straight line with the moon in the middle. c) form a right angle with the earth in the middle. d) form a straight line with the earth in the middle.

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion