1. Equal volumes of the four samples shown below were placed outside and heated by energy from the Sun's rays for 30minutes. The surface temperature of which sample increased at the fastest rate? * Water, Copper pennies, Basalne sand, Iron fragments​

explanation:

since the crust is readily accessible, scientists have been able to perform hands-on experiments to determine its composition; studies on the more distant mantle and core have limited opportunities samples. so scientists also rely on analyses of seismic waves and gravity and as well as magnetic studies.

flat

explanation:

im not sure but the only thing i would think is flat, since mountains are rocky a farm sometimes is or isnt.