Researchers condition a flatworm to contract when exposed to light by repeatedly pairing the light with electric shock. the electric shock is a(n)

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

What is the speed of an object at a given moment?

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive