The atmosphere provides us protection from the sun's rays. in addition, it also makes which of the following possible?
the atmosphere gives us gravity.
the atmosphere gives us air to breathe.
the atmosphere makes the earth rotate on its axis.
the atmosphere makes flying possible.
!

It's a

Sorry i think the answer is b

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -