Lysosomes are responsible for group of genetically inherited disorders.
People would keep doing the same investigation over and over again and no one would know who did what
Calcite is the most common rock
No a rock is not that strong
Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types. So I believe the answer you are looking for would be the third one :)
Hope this helps! Please let me know if I'm wrong :)