I believe it can be warm because usually the surface below us is warm itself, causing the air to be warm as well. The temperature can vary as well
mitochondria
im not 100% sure but it makes sense
If a cell is placed in an isotonic solution, there will be no net flow of water into or out of the cell, and the cell's volume will remain stable. If the solute concentration outside the cell is the same as inside the cell, and the solutes cannot cross the membrane, then that solution is isotonic to the cell.
Answer:Calorimetry
Explanation: In this case, an instrument called Calorimeter is used to measure the amount of heat being transferred
