Answer:
Explanation:
You can identify an unknown substance by measuring its density and comparing your result to a list of known densities. Density = mass/volume. Assume that you have to identify an unknown metal.
Petrified fossils, they are made of wood that becomes petrified from pressure and lack of oxygen.
Goods are objects that fulfill peoples needs and wants.
The right answers are A) and B).
X rays have a lower frequency than microwaves would be the scientific statement.
