Trees give off oxygen that we need to breathe. Trees reduce the amount of storm water runoff, which reduces erosion and pollution in our waterways and may reduce the effects of flooding. Many species of wildlife depend on trees for habitat. Trees provide food, protection, and homes for many birds and mammals.
The answer is they had skills similar to modern people
Explanation: Neolithic is a chronological division of the so-called Prehistory of Humanity, from 10,000 BC to 4,000 BC Neolithic means “new stone” or Polished Stone Age.
These denominations indicate that the divisions in this period of human existence were made from the development of man-made artifacts, as well as the development of some practices regarding their action on nature.
Rivers provides transportation routes is the most common eco system