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the use of modern technology to manipulate living organisms to obtain products from them that are beneficial to humans.
substance used to test for the presence of starch. It is a mixture of elemental iodine,...
the factor in an investigation that is under the control of the investigator.
variation due to the small differences in the genes that control each feature and characteristic...
the factor that changes in an investigation and is not under the control of the investigator....
external opening of the rectum (part of the mammalian digestive tract) through which faeces are...