Mechanical or Electromagnetic
Answer:
Thermocouple, also called thermal junction, thermoelectric thermometer, or thermel, a temperature-measuring device consisting of two wires of different metals joined at each end. One junction is placed where the temperature is to be measured, and the other is kept at a constant lower temperature.
If the size of the population increases, the amount of the resource consumed will also increase
Impermeable is a substance that is water proofed e.g glass, aluminium e.t.c <span />