Which of the following groups of people most likely represents a snapshot in time of a human society that existed 12,000 years ago

Ideally, the backrest is tilted back slightly, so when you turn the wheel your shoulders are the seat.

What statement is true about all chemical changes? a) chemical changes can be undone. b) chemical changes cannot be reversed. c) chemical changes change the color of objects. eliminate d) chemical changes do not form new products.

B. speculate about one positive way and one negative way that this boundary has affected the geographical units it separates over time.