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Observing sun spots Use the telescope that you made in a last experiment. Set it up so that it points directly at the sun and focus it so that a clear and bright image of the s
Lifting water with air pressure Fit a test tube with a single-hole cork and glass tube. Drive out the air by boiling a little water in it. Invert it with the open end under the
What is asthenospher? Ans) The asthenosphere is a layer of the earth crust.
To show that liquids exert pressure Connect two 15 cm lengths of glass tubing or two transparent plastic soda straws with a short length of rubber tubing and attach them to an
Define the Blood Groups We start our discussion by answering the question - do all of us have the same blood group? No, each individual has a different blood group. The differ
Darwin and Natural Selection: The English naturalist Charles Darwin (1809-1882) explained how biological evolution took place, in his remarkable "The Origin of Species" in
what is the nature of work when you are a zoologist
Density of the Earth's Layers Density and gravity caused the proto-Earth to cool and settle into four distinct layers. The four layers are, from top to bottom: the crust, the
what is the structure of the ecosystem
FIRST AID PROCEDURES FOR CHEMICAL ACCIDENTS : There are three general procedures to be followed for chemical accidents and all are based on the principle of diluting the hazardous
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