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when an animal accumulates body fat or stores food resources during warmer periods and becomes...
the region of the kidney where the renal artery enters, and where the renal vein and the ureter...
(also called homeostatic control) the self-regulation and maintenance of a constant stable...
a chemical messenger produced and released by a cell or a gland in one part of the body of the...
the dramatic increase in the human population growth rate over the past two centuries.
cartilage with few collagen fibres and no elastin fibres. It reduces friction in joints,...
secretory tissue in the leaves of plants that secretes water through pores in the epidermis or...
a clear, colourless solution of hydrogen chloride (HCl) in water. It is a strong and highly...