Answer:
(A)
Explanation:
Thermometer, a mechanical one which uses mercury has both Fahrenheit and celsius. It has Fahrenheit on one side and Celsius on the other side. On the electronical one, it will have two modes, Fahrenheit or Celsius.
One can easily rule out the Beaufort scale as this is used to determine wind and thermometer is used to measure heat.
<h2>
An abyssal plain</h2>
An abyssal plain is the bottom of a drop off in the ocean. A drop off is where the floor of the ocean suddenly drops down to lengths of 3000-6000 meters down. (Some aren't this deep and some are deeper.)
Answer:
endocrine system
Explanation:
The answer is the endocrine system