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Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and
Variation in coat pattern in zebras. The patterns show progressively more black left to right and to
Hydronephrosis. Normal kidney (left) and kidney with hydronephrosis (right) are compared. Note the d
Major moons of Uranus in order of increasing distance (left to right), at their proper relative size
Quadrants of left breast and axillary tail of spence
Notice the small motor gear on the left drives a larger plastic gear (black), which then drives ...