âº The coasts of the continents surrounding the Atlantic ocean could, if the continents were moved closer, fit together like a jigsaw puzzle. Reconstruction of previous position continents created with TimeTrek. âº Living animals in widely separated lands are similar.
The rock limestone is mostly made up of one of two types of mineral â either calcite or aragonite. Both of these are different crystal arrangements of the same chemical compound â calcium carbonate (CaCO 3).
Chalk is made of calicite, which is a form of limestone, limestone is a type of Sedimentary rock. sedimentary rock is made out of sediments which are the remains of broken do â¦ wn rocks, shells,and different things like that. 7 people found this useful. Answered.