adjective inimical. Quotations. Pay attention to your enemies, for they are the first to discover your mistakes [Antisthenes]. You can discover what your enemy fears most by observing the means he uses to frighten you [Eric Hoffer The Passionate State of Mind ]. A man cannot be too careful in the choice of his enemies [Oscar Wilde Lady Windermere's Fan ].
A diffusion gradient, or concentration gradient, exists when an area of higher concentration is in contact with an area of lower concentration. When substances are in contact, particles may flow between them.he particles of a substance are in continuous, random motion in every direction, but there is a net flow of particles down the diffusion gradient or, in other words, from the area of higher concentration to the area of lower concentration.
Passive Transport Video. Diffusion. Diffusion is the overall movement of material from an area of higher concentration to an area of lower concentration. The difference in concentration between the two areas is called the concentration gradient; diffusion tends to continue until the concentration gradient is gone.