When there is a - in front of an expression in parentheses, change the sign of each term in the expression
To accomplish this, the reaction sequence includes both reactions irreversible and reversible.
Irreversible reactions are the ones that include conversion of reactants to products where the products cannot convert back to the reactants. On the other hand in reversible reactions, the reactants and products are never fully consumed (constantly are reacting and being produced).
Answer:
it is greater than that of crust because e density increases as you go down
B) population because there is more than one in one species and types