Q. 2 A4.5( 48 Votes )
Discuss: Is garbage disposal the responsibility only of the government?
No, garbage disposal is not only the responsibility of the government. It is our responsibility as well. It is our duty to keep our environment clean. Along with government and local municipal corporation, we all should throw garbage at proper place. We should think about reuse of waste, so that they can be recycled before throwing them.
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If you and your friends are given the choice of eating in a plastic plate or a banana leaf platter at party, which one would you prefer and why?NCERT Science
Beera, a farmer would clear his field everyday, and burn dry leaves fallen on the ground. After sometime he found that those living in huts near his field were suffering from cough and breathing problems.
(i) Can you explain why?
(ii) Also suggest an environment friendly way to dispose the dry leaves.NCERT - Science Exemplar
Provide the suitable term that expresses the meaning of each of the following statements.
(a) Greeting cards made from newspaper.
(b) Contents of the waste bins.
(c) Worms converting certain kinds of waste into manure.
(d) An area where a lot of garbage is collected, spread out and covered with soil.NCERT - Science Exemplar
Read the poem written below and then answer the questions from the information gathered from the book or elsewhere.
Blue and green
Two bins, you mean?
Yes, they are there
To throw your waste.
But not in a hurry
Nor in a haste.
Select from waste, sieve if seems muddy
Separate all item and when they are ready
Place in a blue, or one that is green
For a voyage to the landfill, or for composting.
(i) Name the two kinds of waste that need to be separated from each other in two different waste bins.
(ii) Name two items of waste each that need to be sent to a
(a) landfill, (b) for composting.NCERT - Science Exemplar
Correct the definitions of certain terms given below by changing only one word.
(i) Compost: Substances converted into manure for use in industries.
(ii) Landfill: Garbage buried under water in an area.
(iii) Recycling: Reuse of unused material in the same or another form.NCERT - Science Exemplar
A garbage collector separate items mentioned below in the garbage into red, green and blue containers for their transfer to landfill, composting pit, and recycling unit respectively. Items:
(i) Plastic bags
(ii) Newspaper and journals
(iii) Screw and nuts
(iv) Vegetable peels
(v) Metal chips
(vi) Egg shells
Which item were transferred to which bin?
NCERT - Science Exemplar
Paheli gave the following ill effects of the practice of burning dried leaves and other plant parts
(i) Burning degrades the soil.
(ii) Burning produces harmful gases/fumes.
(iii) Precious raw materials to obtain manure at low cost is lost.
(iv) Lot of heat is generated unnecessarily.
The correct reasons of why we should not burn leaves areNCERT - Science Exemplar