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A chemical agent that causes cancer.
A disturbance to the normal beating of the heart.
A term used to describe insufficient blood flow to the tissues, such that tissue damage occurs.
The principle, based on the theory of René Descartes, that mind and matter are qualitatively different, and that because the mind does not operate within the laws of physics it cannot be investigated scientifically. Descartes also postulated that the mind (or soul) was unique to humans.
Term describing metabolic reactions that result in the breakdown of materials and the release of energy.
A substance that speeds up a reaction without itself undergoing any overall change in the process.
A causal explanation is one given in terms of the mechanisms that underlie behaviour in a given individual at a particular point in time. It should be distinguished from a functional explanation.