The following chart shows the time taken for commonly used materials to biodegrade:
|
Item |
Time taken to biodegrade |
|
Cotton rags |
1-5 months |
|
Paper |
2-5 months |
|
Rope |
3-14 months |
|
Orange peels |
6 months |
|
Wool socks |
1-5 years |
|
Plastic coated paper milk cartons |
5 years |
|
Leather shoes |
25-40 years |
|
Nylon fabric |
30-40 years |
|
Tin cans |
50-100 years |
|
Aluminium cans |
80-100 years |
|
Glass bottles |
1 million years |
|
Plastic bottles |
Do not biodegrade at all |
Which one of the following is not a part of biotic environment:
Insect, air, plants, birds?
How much energy is lost in transfer from one trophic level to other in a food chain?
Write full form of CFCs.
