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Answer: coral reefs act as a filtering system .
Explanation:
B. the contraction and relaxation of the brain
In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
They can either lose or share electrons when they combine with other elements. So, depending on the conditions , these elements can behave as either metals, or non-metals. I hope my answer has come to your help. God bless and have a nice day ahead!
