POINT!
| When room temperature is increased, negative feedback facilitates/inhibits cooler/heater (function). And when room temperature is decreased, negative feedback facilitates/inhibits heater/cooler (function). |
| When room temperature is increased,（red → blue）negative feedback inhibits heater (function). | When room temperature is decreased,（blue → red）negative feedback facilitates heater (function). |
| When room temperature is increased,（blue → red）negative feedback facilitates cooler (function). | When room temperature is decreased,（red → blue）negative feedback inhibits cooler (function). |
Heaters are used in the winter and coolers are used in the summer (because they are "in the opposite direction", respectively).
Heaters are not used in the summer and coolers are not used in the winter (because they are "in the same direction", respectively).
Challenge Quiz