Examlex
Compare and contrast changes in body image that occur at puberty for males and females.
Concentration Gradient
A variation in the concentration of a substance across a distance, often leading to the diffusion of substances from an area of higher concentration to an area of lower concentration.
Diffusion
Spontaneous spreading of molecules or atoms through a fluid or gas.
Indigestible Substances
Materials that cannot be broken down and absorbed by the digestive enzymes and system of an organism, often passing through the system largely unchanged.
Entropy
Measure of how much the energy of a system is dispersed.
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