Question
Mention the factors affecting stored grains and describe their preventive measures.
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Each beehive consists of thousands of hexagonal thin-walled fragile cells. Name the material which is used to make these cells and mention the significance of the hexagonal shape of the cell.
To what height should a box of mass 150kg be lifted, so that its potential energy may become 7350 joules? (8 = 9.8m/s2).
Explain different types of elements present in phloem.