Here's a breakdown:
* Hearing is crucial for survival: Ears allow monkeys to detect predators, locate food sources, and communicate with each other.
* Sound waves and the ear: Ears are designed to capture sound waves from the environment and transmit them to the inner ear, where they are converted into electrical signals that the brain interprets as sound.
* Different ear shapes: The shape and size of a monkey's ears can vary depending on the species and its habitat. For example, monkeys living in dense forests might have larger ears to better hear sounds in the thick vegetation.
So, monkeys have ears because they are essential for their survival and allow them to interact with their surroundings and each other.