Question
Name three most important nutrients required for plant growth.
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How is the complexity of cell structure and their number used in classification?
Why does a sharp knife cut objects more effectively than a blunt knife?
Name the two acids that are present in acid rain.
The frequency of the sound emitted by the lioudspeaker is 1020Hz. Calculate the wavelength of the sound wave in air in cm where its velocity is 340m/s.
Explain different types of elements present in phloem.