4. (a) Collect pieces of different kinds of paper. Find out which of these can be recycled,
(b) With the help of a lens look at the pieces of paper you collected for the above question. Do you see any difference in the material of recycled paper and a new sheet of paper?
4. (a) Collect pieces of different kinds of paper. Find out which of these can be recycled,
(b) With the help of a lens look at the pieces of paper you collected for the above question. Do you see any difference in the material of recycled paper and a new sheet of paper?