Answer:
Carbon:0
Calcium:1
Chloride:2
Hydrogen:0
Oxygen:0
Explanation:
Ca is calcium and there is only one in the compound due to no subscripts. Cl is chloride with a subscript of 2, meaning there are 2 atoms of that element in this compound.
The flexible barrier that protects the inside is the cell membrane
The process responsible for this is mass movement.
These are the levels of Linnaeus's hierarchical system of classification:
kingdom, phylum, class, order, family, genus, and species.