As plates move past each other, stress builds up. what happened when this stress becomes too much

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.