When an ant bites, it injects _________ into the skin.
$$\textbf{Correct Answer:}$$ Formic acid
$$\textbf{Explanation:}$$ When an ant bites, it injects formic acid into the skin. This is why it hurts. It can be treated using a base like baking soda to neutralise the acid.
Formula of Formic Acid: HCOOH