A thermostat set to 62°F turns on the furnace when a house cools below that temperature, and shuts the furnace off when a house warms above that temperature. This is an example of a simple . negative feedback loop

system throughput

system loop

positive feedback loop

tipping point

How do living things obtain phosphorus

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

How to farmers could ensure that they only grow white flowers