Yo u know that u can search in goolge and other website.Pssssst pls answer my que.
A type of strong chemical bond in which two atoms share one or more pairs of valence electrons. Two or more atoms held together by covalent bonds. The attraction that exists between opposing (positive and negative) charges within the atom.
Answer:
Some minerals are needed in larger amounts than others, e.g. calcium, phosphorus, magnesium, sodium, potassium and chloride
I believe the answer is littoral zones.
Sorry if I'm wrong, Hope this helps.
