What is the term for: made up of various parts or elements? It wont even show the right thing in stoopid gogle -p-

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

The identities of substances are the same before and after which type of change