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Answers
Answer:
epidemic
Explanation:
which is spread world wide
Answer:
que 17 answer : al2 o3 , ca(oh)2 , caco3
que 26 : surface area ,, temperature,,
que 27 : Rutherford model stated that there is a lot of space spare outside the nucleus where is a hard dense material in inside the centre of the atom known as nucleus nucleus contain 99% of the weight of the atom Rutherford atomic model of alpha particle scattering shows that there is a path known as nucleus in the centre of atom
que 16 :. physical changes are those changes in which the physical property of material changes but not the chemical property example of physical change on melting of ice melting of wax
chemical changes are those in which the chemical properties of a substance get changed example of chemical changes when we burn magnesium ribbon in presence of air
que 23 : mitochondria is the energy power giving of the cell mitochondria provides energy for all requirements and functions of the cell without mitochondria and the cell will not get any kind of power mitochondria is the powerhouse of the cell
que 30 ::two friends cannot is each other voice on moon because there is no atmosphere on moon
echo cannot be heard in a small room because equal need a minimum distance of 18 m
Explanation:
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