That layer is stratosphere. It contains the ozone layer.
Ozone is higher in concentration in atmosphere. Stratosphere contains most ozone.
A hypo-tonic solution contains higher concentration of solvent. When it is compared with a hyper-tonic solution.
If it is water moving from a higher concentration to a lower concentration, the diffusion is called osmosis.
No. Diffusion is the process in which particles move from where they are in higher concentration to where they are in lower concentration.
Acid solutions contain higher concentrations of hydrogen ions (hydronium ions).
The higher parts
Soil air has a higher concentration of Carbon Dioxide; plants feed on this and convert it into Oxygen during Osmosis, which is why there is a higher concentration of Oxygen in the atmosphere.
Higher atmosphere, called the stratosphere, would be one example.
ventilation
lower
If a cell contains higher water concentration, it means it has higher water potential. So, it will lose some of its water inside, and eventually shrink.
Atmosphere has the higher concentration of carbon dioxide. If water had a high concentration of carbon dioxide then water would be acidic because it would result the formation of carbonic acid, but water is neutral. The fact that dissolved carbon dioxide create carbonic acid is used in the manufacture of Coca-Cola. So I think it is the atmosphere.