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these factors; such as labour and raw materials; change according to the output and are quick...
costs of the business that vary according to the number of goods produced, for example, water...
quantities that can take many values; or letters that represent numbers in an algebraic...
a measure of dispersion of a data set which is equal to the square of the standard deviation....
a leaf with certain areas that lack chlorophyll. The leaf therefore contains both green and non-...
regions or bundles of vascular tissue consisting of xylem and phloem separated by cambium.
a lateral meristem in the vascular tissue of plants. The vascular cambium is the source of both...
(also called the stele) the region that includes the pericycle and the vascular tissues in a...
tissues that are responsible for the transport of substances within the plant.