Answer:Mechanical weathering
weathering breaks down rocks by forming new minerals that are stable at the Earth's surface.
FeS is an example of an ionic compound as in the formula there is a metal of Fe iron chemically bonded to the nonmetal S sulphur. Resulting in a strong electrostatic attraction due to the transfer of valence electrons from the iron to the Sulphur.
Aluminum foil I think but if not goodluck :)
Answer:
number of individuals
Explanation:
calculated by dividing the number of people by area