1/4 Ao = Ao * ( 1/2)^(t/106)
t = 212
subtract 4.6 billion years
<span>d)</span>
Answer:
<h2>Industry </h2>
Explanation:
because industry is a building not a weather or related on nature
D. action force and reaction forces are stated in his law
They move because of convection currents in the mantle
Calcium chloride forms an ionic compound with a
regularly arranged lattice of oppositely charged ions.
The Na+ and Cl- ions are held together by
strong electrostatic forces.
Hope that helps