Advertisements
Advertisements
प्रश्न
What hazards does mining pose to the environment?
Advertisements
उत्तर
Hazards posed by mining include:
(a) Release of harmful gases such as methane.
(b) Elimination of existing vegetation and destruction of the genetic profile of the soil.
(c) Continuous mining at a place can displace or destroy wildlife and habitat.
APPEARS IN
संबंधित प्रश्न
How are most of the solid wastes in urban areas disposed of?
What is sewage? How is sewage disposed of?
Municipality provides two types of dustbins for garbage collection. One coloured with blue colour and other with green colour. From following wastes which you will put in the which dustbin?
Plastic materials, metals and glass items, wastes of plants and animals, peels of fruits and vegetables, dried leaves and twigs, remains of meat like flesh and bones.
First link in any food chain is usually green plants because ______.
Disposable plastic plates should not be used because
Correct the definition of certain terms given below by changing only one word.
Landfill: Garbage buried under water in an area.
To what use can you put the following kind of garbage and how?
Old newspapers
Read the poem written below and then answer the questions from the information gathered from the book or elsewhere.
Name the two kinds of waste that need to be separated from each other in two different waste bins.
Put a tick (√) against the garbage items given in Table 16.1 which could be converted into manure. Put a cross (×) against the others.
| Garbage Items | Make manure or not | |
| (i) | Egg shells | |
| (ii) | Straw | |
| (iii) | Dry flowers | |
| (iv) | Pebbles | |
| (v) | Broken pieces of glass | |
| (vi) | Nails and screws | |
| (vii) | Plastic bangles | |
| (viii) | Left over food | |
| (ix) | Steel broken vessel | |
| (x) | Dead animals |
Give two examples of Biodegradable wastes.
