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| From: madhu_pk | Reply 1 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 1 |
Liquefied petroleum gas..
it is a non renewable resource
Posted at: Sun Mar 21 05:42:00 2010 (GMT)
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| From: madhu_pk | Reply 2 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 2 |
causes of natural land degradation are:
1. earthquakes
2. floods
3. desertification
Posted at: Sun Mar 21 05:42:55 2010 (GMT)
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| From: madhu_pk | Reply 3 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 3 |
1. it maintains a balance in the temperature of the atmosphere by absorbing
carbondioxide .
2. it maintains the fertility of the soil
Posted at: Sun Mar 21 05:44:36 2010 (GMT)
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| From: madhu_pk | Reply 4 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 4 |
1. source correction methods
2. pollution control equipments
Posted at: Sun Mar 21 05:45:19 2010 (GMT)
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| From: madhu_pk | Reply 5 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 6 |
1.wave energy
2. tidal energy
Posted at: Sun Mar 21 05:46:02 2010 (GMT)
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| From: madhu_pk | Reply 6 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 7 |
johads are check dams or embankments built across the contour of the slope
to harvest rainwater during monsoon season.
Posted at: Sun Mar 21 05:47:08 2010 (GMT)
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| From: madhu_pk | Reply 7 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 8 |
coral bleaching refers to the loss of algae from the corals leading to its
whitening which is an indication of the death of the corals.
Posted at: Sun Mar 21 05:48:09 2010 (GMT)
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| From: madhu_pk | Reply 8 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 14 |
endangered species are those threatened species whose number has been
drastically reduced due to some factors. they are on the verge of extinction
if such factors continue to prolong.
Posted at: Sun Mar 21 05:50:05 2010 (GMT)
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| From: madhu_pk | Reply 9 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 15 |
carbondioxide sinks are those resources which absorb carbondioxide from the
atmosphere. they are:
1. plants
2. oceans
Posted at: Sun Mar 21 05:51:10 2010 (GMT)
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| From: sumedha | Reply 10 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 27 |
volcanoes
Posted at: Thu Sep 9 19:43:14 2010 (GMT)
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| From: ezhilmathi | Reply 11 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 1 |
LPG - Liquefied Petroleum Gas.
Disadvantage - it is highly inflammable
Posted at: Wed Dec 1 15:34:41 2010 (GMT)
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| From: ezhilmathi | Reply 12 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 4 |
1)Electrostatic Precipitators, 2)wet scrubbers, 3) filters
Posted at: Wed Dec 1 15:38:20 2010 (GMT)
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| From: ezhilmathi | Reply 13 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 5 |
1) causes skin allergies and diseases 2) increase in the temperature of the
earth.
Posted at: Wed Dec 1 15:40:12 2010 (GMT)
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| From: ezhilmathi | Reply 14 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 6 |
1) solar energy 2) wind energy
Posted at: Wed Dec 1 15:41:35 2010 (GMT)
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| From: ezhilmathi | Reply 15 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 10 |
1)to conserve the forests by joint co-operation of the government and the
people living in the fringes of the forest 2)to allow the local people use
the resources of the forest in a sustainable manner
Posted at: Wed Dec 1 15:46:59 2010 (GMT)
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| From: ezhilmathi | Reply 16 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 13 |
1) greenhouse effect 2)exhaust from the industries and vehicles
Posted at: Wed Dec 1 15:50:08 2010 (GMT)
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| From: ezhilmathi | Reply 17 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 14 |
ENDANGERED SPECIES :
These are species which exists in low numbers and are in the
verge of extinction.
Posted at: Wed Dec 1 15:52:13 2010 (GMT)
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| From: ezhilmathi | Reply 18 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 15 |
CORAL REEFS are called 'carbon dioxide sinks ' because they absorb carbon
dioxide to make their calcareous skeletons
Posted at: Wed Dec 1 15:54:37 2010 (GMT)
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| From: ezhilmathi | Reply 19 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 17 |
1) carbon dioxide (CO2) , chlorofluoro carbons(CFC)
Posted at: Wed Dec 1 15:57:02 2010 (GMT)
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| From: ezhilmathi | Reply 20 of 23 | Reply | |
| Subject: Contributed Answer/Explanation to Q. 27 |
Contamination of air with harmful pollutants is called air pollution.
SOURCES:
1)industries
2)auto-mobiles
3)burning of fossil fuels
4)volcanoes and forest fires
Posted at: Wed Dec 1 16:03:59 2010 (GMT)
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