2 pts Each
has characteristic physical and chemical properties that can be
used to identify it.
O pure substance
o the same
Odensity
o natural resource

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.