Most of the earth's volume is contained in the
a. mantle
b.
crust
c.
inner core
d.
outer core

answer:

its a

explanation:

this region is known as the mantle, and accounts for the vast majority of the earth's volume. movement, or convection, in this layer is also responsible for all of earth's volcanic and seismic activity

answer; ////(a)///100kg   1.0m  

the answer is d because an atom is the smallest unit of a substance