The Continental Congress. 1  In the First Continental Congress, Patrick Henry, a delegate from Virginia, made the bold statement that I am not a Virginian, I am an American. 2  At the time of the congress, there were around 2.5 million people living in the United States.
Next Question. The main ingredient in eggshells is calcium carbonate (the same brittle white stuff that chalk, limestone, cave stalactites, sea shells, coral, and pearls are made of). The shell itself is about 95% CaCO 3 (which is also the main ingredient in sea shells).
Eggshell is made almost entirely of calcium carbonate (CaCO3) crystals. It is a semipermeable membrane, which means that air and moisture can pass through its pores. The shell also has a thin outermost coating called the bloom or cuticle that helps keep out bacteria and dust. An air space forms when the contents of the egg cool and contract after the egg is laid.