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प्रश्न
Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as ______.
विकल्प
eutrophication
pollution
biomagnification
accumulation
उत्तर
Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as biomagnification.
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संबंधित प्रश्न
Differentiate between biodegradable and non-biodegradable substances with the help of one example each.
After the examinations Rakesh with his friends went on a picnic to a nearby park. All friends carried cooked food packed in plastic bags or plastic cans. After eating the food some friends collected the leftover food and plastic bags etc and planned to dispose them off by burning. Rakesh immediately checked them and suggested to segregate the leftover food and peels of fruits from the plastic materials and respectively dispose them off separately in the green and red dustbins placed in the corner of the park.
(a) In your opinion, is burning plastic an ecofriendly method of waste disposal? Why? State the advantage of method suggested by Rakesh.
(b) How can we contribute in maintaining the parks and roads neat and clean?
Describe an activity to show that while paper is biodegradable but plastic (say, polythene) is non-biodegradable.
Explain why, some materials are biodegradable but some are non-biodegradable.
Give two examples of biodegradable wastes.
What type of substances are the major pollutants of the environment? Name two such substances
Disposable plastic plates should not be used because ______.
n the following groups of materials, which group/groups contain only non-biodegradable materials?
(i) wood, paper, leather
(ii) polythene, detergent, PVC
(iii) plastic, detergent, grass
(iv) plastic, bakelite, DDT
(a) (iii)
(b) (iv)
(c) (i) and (iii)
(d) (ii) and (iv)
Suggest any four activities in daily life which are eco-friendly.
If you dump kitchen waste in a pit, it may, after sometime
