Because science is always changing and every time you cam come up with a new outcome.
A contusion occurs when a strong blow or repeated blows from an object struck the body, crushing the underlying muscle fibres and connective tissues without breaking the skin.
A contusion can vary in severity depending on the object and location of the injury. For example a contusion to the brain may cause a concussion that can cause serious symptoms that require immediate medical attention
Answer:
aftershocks
Explanation:
those come after an earthquake and can last for up to a week after. theyre like small tremors
