How did the movement of the early civilizations of the Fertile Crescent (Middle East) further support Diamond's idea that geography played a key role in the success of a civilization?

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.

You are only allowed to use tutors that your school recommends. t / f

Motorcyclists may have to suddenly change direction when encountering a. potholes and reflective markers b. yellow lights c. pavement seams and railroad crossings d. strong winds