Read lines 45 through 49. While temperatures above ground change a lot from day to day and season to season,
temperatures 10 feet below the Earth's surface hold nearly constant between 50° and
60°F. For most areas, this means that soil temperatures are usually warmer than the air in winter and cooler than the air in summer. Geothermal heat pumps use the Earth's constant temperatures to heat and cool buildings. They transfer heat from the ground (or water) into buildings in winter and reverse the process in the summer.
Why does the author discuss the transfer of heat in the last sentence of the paragraph?
A to explain how the heat pump can help people stay warm and cool
B to convince the reader that a heat pump is a worthwhile investment
C to show what makes geothermal activity happen under the Earth's crust
D to argue that geothermal energy is superior to gas or electricity

Ineed .. read the passage, and choose the two (2) inferences that are most firmly based on the given information. eye contact, also referred to as gaze, is how—and how much—we look at peoplewith whom we are communicating. eye contact has several purposes incommunication.its presence shows that we are paying attention. in addition, how we look at a person reveals a range of emotions such as affection, anger, or fear. moreover, intensity of eye contact may also be used to show dominance. for instance, we talk of someone “staring another person down.” finally, through ou reye contact we can check the effect of our communication. by maintaining our eye contact, we can tell when or whether people are paying attention to us, when people are involved in what we are saying, and what their feelings are about what we are saying. 1. eye contact can be a clue to what we feel and what our listeners feel. 2. our eyes are more important than our ears in effective communication. 3. eye contact can never reveal how much power one person has overanother. 4. sometimes a parent can control children just