I’m think 3 or 1.. am I right?

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

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.