What is the orientation of the magnetic stripes of iron contained in rocks that support the idea of seafloor spreading?

Dall of the above all of the choices make sense

Ithink it is space that makes up 70 percent

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