Question

why was the ability to fire a signal an advancement for humans

Explanation:

The ability to fire a spear was an advancement as it allowed humans to hunt from a safer distance, increasing hunting success and reducing the risk of injury from dangerous prey. It also improved defense against predators and competing groups.

Answer:

The ability to fire a spear was an advancement for humans because it enhanced hunting success, provided better defense, and allowed for safer interaction with prey and potential threats.