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Humus and the smallest particles of rock from the upper layer of soil called topsoil or A-horizon. · It is the layer containing the most nutrients for plants. · The roots of most plants are confined to this layer. · Humus makes this layer porous and fertile.
When a passenger in a moving bus is suddenly thrown forward when the bus stops, this is explained by:
The material used in the fabrication of a transistor is –
Fog is an example of –
Gamma rays have greatest similarity with –
Why do starts twinkle in the sky?
The storage battery of a car has an emf of 15 V. If the internal resistance of the battery is 0.5 Ω, what is the maximum current that can be drawn from...
A device used for converting A.C. into D.C. is called –
Which lens is used to correct myopia (shortsightedness)?
Which of the following is the best conductor of electricity?
Ratio of intensities of two waves with amplitudes 2 and 3 is:
