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How to make a constellarium
A constellarium is a simple device used in teaching the shapes of several constellations. Get a cardboard or wood box and remove one end. Draw the shapes of various constellations on pieces of dark coloured card- board large sufficient to cover the end of the box. Punch holes on the diagrams where the stars are located in the constellations. Place an electric lamp inside the box. When the lamp is turned on and several cards are placed over the end of the box, the constellations may be seen clearly.
this is a sticky substance that traps dust from the inhaled air
Explain the Regulation of Thyroid Hormone Secretion TSH from the anterior pituitary gland controls the secretion of thyroid hormones. Thyrotropin Releasing Factor (TRF) from th
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describe the factors which decide the broad area of scientific activity
Endoenzyme An enzyme which is not secreted or exported out of the cell, but is kept and used by the cell which made it.
what are the list of animals of nematoda
The Early History of the Earth The Earth has been evolving and changing ever since its origin, about 4.5 billion years ago. In the first tens of millions of years of the Ea
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What''s electricity and what dangers, can heat cause?
Physico-chemical properties of vitamin E are as follows: a) Tocopherols are yellow, oily liquids. b) They are freely soluble in fat solvents. c) The compounds are
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