Human development that will survive in a number of ways. He thinks things are looking for weapons to find food and protect themselves. The past may be used in killing animals and eating the meat of it.
Humans have developed to survive in many ways. He figured out what to make weapons. To find food and protect themselves. The former may be used rocks to kill the animal and eat its meat.
Human has developed to survive in many ways. He thought to find things to make weapons. To feed and protect yourself. In the past may use the stone to kill animals and bring its meat to eat.