Fill in the blanks:
1. …………….. records are available in the form of inscriptions, manuscripts, books, etc.
2. We humans change the natural character of our …………….. to some extent.
3. Humans do not eat their ……………….. in its natural form as other animals do.
4. Humans make pots, bricks and many other things from ……………
5. Cultures which flourished in the New Stone Age were based on an ………………… way of life.
