The air we breathe is mostly a mixture of oxygen and hydrogen. How do air molecules change above 100 km? Group of answer choices

Water vapor condenses from the cold air.

The electrically charged ions in the ionosphere creates turbulence.

Meteors burn in Earth's atmosphere.

Gases are no longer evenly mixed but layered.

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.