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Why did the continents spread apart?
This is because of the heat generated from the earth's interior and earthquakes - the convection currents deep within the earth due to the movement of the material that sits on top.
Method of science: We have seen above that science is an enaeavour to understand nature and to mould it to satisfy human needs. In earlier units we have seen that, in this pr
What does regolith mean? Ans) This refers to a layer of loose surface material covering bedrock.
Experiment of Making a model of a simple flower By Using of modelling clay, coloured paper and toothpicks make 3D-dimensional models representing the parts of a typical flower.
why does the periodic table useful to scientist
Fire Alarms : Most modern fire alarm systems are electric and can be activated from several points throughout a building. These points usually consist of glass-covered switches wh
Explain the Microscopical examination of Urine By microscopical examination, the pus cells, RBC and cast cells are found if the infection is present. Microscopical examination
Explain the Hypersecretion during childhood Hypersecretion during childhood: Due to an increased secretion of the growth hormone, gigantism occurs. There is an excessive skelet
Another way to observe the buoyancy of water Push a large cork to the bottom of a pail of water. Notice the quantity of force you have to apply to hold the cork at the bottom.
Explain the Secondary Active Transport In secondary active transport, there is no direct coupling of ATP; instead the electrochemical potential difference created by pumping io
List any three human activities that you think would lead to air pollution. The following three human activities would lead to air pollution: (i) Burning of fossil fuels such
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