When a raw, shell-less egg was placed in sugar solution, the egg shrank. the egg was brought back to its original size by
placing it in water. which process does the experiment demonstrate?

Osmosis

Explanation:

The sugar solution is a hypertonic solution. When a raw shell-less egg is placed in sugar solution, the solvent diffuses from the egg into the sugar solution. The solute concentration of the sugar solution is higher than that of the egg and thus water water will pass out making the egg to shrink. When the egg is placed in water which is hypotonic, the water molecules move into the egg and thus the egg regains its original size.

i'd say that the moon rock is about 2.2 billion years old.

the answer is trees if i'm not mistaken