Decomposed organic matter ,mud,silt ,and sand
Answer:
Isostasy controls the regional elevations of continents and ocean floors in accordance with the densities of their underlying rocks. ... The concept of isostasy played an important role in the development of the theory of plate tectonics.
It's the rows. They are periods. (1,2,3,4,5,6,7 - the ones without the letters).
Answer:
Oxygen and Chlorine
Explanation:
Covalent bonds involve the sharing of electrons between nonmetals.
