What did I Learn this Week and What Would I Like to Know

This week was a very busy week, so my class and I have studied this week about caves and the earths crust. We have watched 2 movies from the same series of Bill Nye the Science Guide. I have learned a great deal of facts and science theories, about the earths crust and about caves. I have learned that there are 4 layers on earth the first is the crust which is the layer where there is life and the layer that is the thinness in width. After the crust comes the layer called the Mantle which is a gooey warm layer where magma is formed. Next there is the layer called the liquid outer core is much more warmer then the mantle. The liquid outer core is the 3 layer. And the 4 is called solid inner core which the the warmest which is the nucleus of the earth.
About caves I have learned a big variety of facts which were very interesting to me. I have learned that caves have very little of sun shine every year therefore many bats, owls, mice, and other animals. There are other types of cave animals:there are Troglodytes which are the cave lovers like bats bears and fish. There are also troglophies are cave dwellers which live deep deep in the dark of the cave which don't have any pigment and even they don't need it like crabs, fish, lobsters, and worms.
I would like how are rocks formed and i would like to know what calcium is in the dripping water of Stalactites and stalagmites, and would like to know how is the solid inner core formed.