Causes of Friction: Whenever two surfaces are in with each other, there are mountain-like peaks called asperities that against each other.

it means there are 3 atoms of oxygen

let that person have a turn to speak : )

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.