Need plz plz plz
the earth's crust is
thicker under the oceans than under the continents
in motion because of convection currents in the mantle
mostly made of iron and nickel
made of one large piece called the crustal plate

In motion because of convection currents in the mantle

Answer (d) may increase or decrease porosity through dissolution or deposition;

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