It allows different kinds of organisms to be easily identified based on their characteristics.
Felis domesticus & Felis silvestris. They both belong to the same genus (cats).
C. Meters are the SI unit for length so would be most meaningful.
B I think . Im not sure tbh
... termed "hypotonic," meaning less solids (or more diluted) than inside the cell. For fluid movement in/out of cells, water will diffuse (via osmosis) from the hypotonic solution to the hypertonic one, assuming a permeable barrier (i.e. cell membrane) allows it. With this case, water will flow into the cell from outside.