Which of the following you states the law of conservation of mass? A In a chemical reaction, two compounds combine to form a new compound.
B
In a chemical reaction, atoms are rearranged, and some join new molecules.
С
Mass cannot be created or destroyed in a chemical reaction,
D
Energy is neither created nor destroyed in a chemical reaction,

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

a chain link fence because there so tiny even my albino donkey can't get out