Animals are able to see much more clearly in the dark than humans can.
Or
Humans are able to see much more clearly in the dark than animals can.
Insoluble means that a substance does not dissociate in another, like mixing water and oil.
In an unsaturated solution, the solute does dissociate into solution but there is more "room" in the solution to hold more. Say if you have an amount of water that can dissolve 20g of salt but you only have 15g dissolved in it, that solution is unsaturated.
eating healthy foods
working out and eating healthy helps
Radon. As you move down a group in the periodic table you essentially add new energy levels to the one above it, making the atom larger.
