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water-proof, waxy suberin-thickened layer on the radial and transverse cell walls of the endodermis.
molecule that forms when carbon dioxide attaches itself to the amino group of a haemoglobin...
cells that are formed during secondary growth by the vascular cambium ring just to the inside of...
the spread of cancer cells from the original (primary) malignant tumour to other parts of the...
series of interlinked food chains by which energy circulates within an ecosystem.
chisel-shaped teeth found at the front of the mammalian jaw, used to bite and cut off pieces of...