Imagine that we have two rabbits which we call subject 1 (s1) and subject 2 (s2). at s1 we feed it with grass, and at s2 we give it meat for a previously established time. after this process it is pertinent to ask the students: what will happen to s1 and s2? in what way could the changes produced by the feeding form of s1 and s2 be identified externally?

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases