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tumours in the lung tissue that interfere with the normal functioning of the lungs.
the total amount of carbon dioxide produced by individuals, nations or organisations as a result...
the main force responsible for the upwards movement of water in the xylem.
two bean-shaped guard cells surrounding a pore in the epidermis of a leaf that allow gases to...
the final stage of cellular respiration: energy-rich ATP molecules and water are released as end...