You'd expect the DO to be lower in the morning. Photosynthesis doesn't occur at night and the DO would drop overnight due cell respiration.
You would expect to find a high concentration of mitochondria in cells that require a lot of energy, such as muscle cells and nerve cells.
The concentration of carbon dioxide over an industrial site might be higher, because of the emissions, however, carbon dioxide mixes well with other gases, so it will spread out all over the world.
You would expect a corrosive symbol, or an irritant symbol, depending on the concentration.
From areas of higher concentration (of water) to lower concentration (of water) - ie it fills the space. That would mean that it would flow from a solution whose concentration of solute is higher to one where the solute concentration is lower.
higher
It is possible to tell the difference between two samples of water, yes. If you have reference samples, you could even tell which of them was from where. Without reference samples, you'd have to make some guesses about what you would expect New York water to be like vs. what you would expect Idaho water to be like (I'd expect NY water to be softer, but I'm not a geologist and could easily be wrong about that.)
The solution with the higher concentration of solvent compared to another solution would be the one with a lower concentration of solute. The solvent concentration is higher in the solution where the solute concentration is lower.
Two different samples of a pure substance would have the same physical properties, such as color, melting point, boiling point, and density. Their chemical properties, like reactivity and ability to form specific compounds, would also be identical. Variations in the samples' properties could indicate impurities present.
The concentration; to prepare a solution the compound must have a solubility.
Higher
faster in higher altitiudes
Osmosis is the net movement of water molecules across a semipermeable membrane from a region of a lower concentration to a higher concentration. Diffusion is the movement of particles from a region of higher concentration to a region of lower concentration down a concentration gradient