Which action is the best example of a direct observation? identifying which bird was present by the tracks that it leaves in the sand at a beach reading numbers on a heat sensor to conclude that there is a deer in the night woods listening to a cricket chirp at night and counting the number of chirps per minute determining the seal population of an island by counting seals in 10 square meters of the island

the correct answer is C!

Explanation:

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.