yes
The shell is mostly calcium.
theprotoplasm of a cell is mostly made up of water.
Mostly calcium carbonate. 93% of it.
Earth is covered mostly in water, but is not made up mostly of water. Most of earth is made of rock.
The egg yolk is the part of the egg that feeds the developing embryo. It is made up of mostly protein, cholesterol, vitamins, fat and minerals.
Very little starch. Mostly protein and water.
Interesting question. An egg will eventually cook at 150 degrees but it won't boil. An egg is mostly water and water boils at 212 degrees F.
pasta is made from flour egg and water
Water.
Mostly water
Water
water