Brain-imaging research shows that even simple mental operations depend on a the use of ten percent of our brain.
O b. the use of one specialized region of the brain.
b
O c. the use of only one brain hemisphere at a time.
O d. activity spread across multiple brain areas.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.