Examlex
Due to the ageing of the UK population, by 2025 it is projected that there will be more people aged 65 years and over in the UK than under 16 years.
Voltage Gradient
Difference in charge between two regions that allows a flow of current if the two regions are connected.
Concentration Gradient
Difference in the relative abundance of a substance among regions of a container; allows the substance to diffuse from an area of higher concentration to an area of lower concentration.
Diffusion
The movement of molecules from an area of higher concentration to an area of lower concentration, a fundamental process in biology and chemistry.
Negatively Charged
Having more electrons than protons, resulting in a net charge that is less than zero.
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