Legals test
a test for acetone; the urine is rendered alkaline by a few drops of a solution of potassium hydroxide, and to this are added 2 or 3 drops of a freshly prepared 10% solution of sodium nitroprusside; it is coloured red, then yellow; then a few drops of acetic acid are trickled down the side of the test tube and at the line of junction of the two fluids is formed a carmine or purple ring.
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
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The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..
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This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..