Thursday, September 17, 2009
& WAN SYAHMI
!!!! GLOBAL WARMING!!!!
WHAT IS GLOBAL WARMING:
Global warming is the increase in the average temperature of the Earth's near-surface air and oceans since the mid-20th century and its projected continuation.
WHAT CAUSES GLOBAL WARMING:
1. Carbon Dioxide from Power Plants In 2002 about 40% of U.S. carbon dioxide emissions stem from the burning of fossil fuels for the purpose of electricity generation. Coal accounts for 93 percent of the emissions from the electric utility industry. US Emissions Inventory 2004 Executive Summary p. 10 Coal emits around 1.7 times as much carbon per unit of energy when burned as does natural gas and 1.25 times as much as oil. Natural gas gives off 50% of the carbon dioxide, the principal greenhouse gas, released by coal and 25% less carbon dioxide than oil, for the same amount of energy produced. Coal contains about 80 percent more carbon per unit of energy than gas does, and oil contains about 40 percent more. For the typical U.S. household, a metric ton of carbon equals about 10,000 miles of driving at 25 miles per gallon of gasoline or about one year of home heating using a natural gas-fired furnace or about four months of electricity from coal-fired generation.
2. Nitrous oxide Another greenhouse gas is Nitrous oxide (N2O), a colourless, non-flammable gas with a sweetish odour, commonly known as "laughing gas", and sometimes used as an anaesthetic. Nitrous oxide is naturally produced by oceans and rainforests. Man-made sources of nitrous oxide include nylon and nitric acid production, the use of fertilisers in agriculture, cars with catalytic converters and the burning of organic matter. Nitrous oxide is broken down in the atmosphere by chemical reactions that involve sunlight.
3. Deforestation After carbon emissions caused by humans, deforestation is the second principle cause of atmospheric carbn dioxide. (NASA Web Site) Deforestation is responsible for 20-25% of all carbon emissions entering the atmosphere, by the burning and cutting of about 34 million acres of trees each year. We are losing millions of acres of rainforests each year, the equivalent in area to the size of Italy. [22] The destroying of tropical forests alone is throwing hundreds of millions of tons of carbon dioxide into the atmosphere each year. We are also losing temperate forests. The temperate forests of the world account for an absorption rate of 2 billion tons of carbon annually. [3] In the temperate forests of Siberia alone, the earth is losing 10 million acres per year.
WHAT ARE THE EFFECTS:
1. Global warming is caused by green house gases, which trap in the sun’s infrared rays in the earth’s atmosphere, which in turn heat up the earth’s atmosphere. These green house effect warming is called as global warming. The effects of green house effect are visible more prominently in the recent years, with number of natural calamities on the rise in the whole world
2. The global warming has happened in the past few years and is evident from the rise in mean temperature of the earth’s atmosphere. The main causes for the global warming are attributed to release of green house gases by human activities. The main gases contributing to green house effect are carbon dioxide, water vapor, methane and nitrous oxide. The largest producers of these gases are the thermal power plants, which burn the fossil fuels and produce these gases in large quantities. The second biggest sources of these green house gases are the road vehicles and industries.
3. The effect of global warming can be felt on seasons too. There is shift in season cycle, as the summers are getting longer than the winters. This has affected the animals and made them to change their lifestyle accordingly, and those who failed to do so have perished or on the verge of extinction
URL:WWW.YAHOO.COM
Your Attention Is All Tht I Require ,
@ 11:37 AM
HELLO THERE ,
We 2N2'ers, are super FRIENDLY & HYPER! :DDD
Express, Normal & Normal Tech. We're just in different streams studying at our comfortable pace. So, don't look down on us. :)
2N2'09-ers ,
Form Teacher : Mdm Salimah
Co Form : Miss Wang Xiao Jun
English : Miss Norazleen
Maths : Mr Goh Yong Yeu / Mr Oh
Science : Ms Judith
Physical Education : Mr Joe Tan
Literature: Miss Lim Bin
Music : Next Semester.
Geography : Next Semester.
History : Mdm Salimah
F & N : Mdm Paramjit
D & T : Mr Eric Micahel Basuki
Chinese : Ms Wang Xiao Jun
Malay : Ms Farrah
--------------------------------------
01.✩CANDY✩
02.✩CHARRISSA✩
03.✩FILIAH✩
04.✩FIONA✩
05.✩JESSIKA✩
06.✩KAR YEE✩
07.✩KHAMISAH✩
08.✩MICHELLE✩
09.✩SHERYL✩
10.✩MINGZHU✩
11.✩SURIATI✩
12.✩QUSYAIRAH✩
13.✩SALEHA✩
14.✩SYAQINAH✩
15.✩JIA HUI✩
16.✩AMANDA✩
17.✩REGINE✩
18.✩ZHI YAN✩
19.✩YASMIN✩
20.✩LI HAO✩
21.✩IVAN✩
22.✩DARREN✩
23.✩ISAAC✩
24.✩WINSTON✩
25.✩EDSEL✩
26.✩GABRIEL✩
27.✩LEON✩
28.✩EDWIN✩
29.✩JUNHAO✩
30.✩RAMADHAN✩
31.✩RIFQI✩
32.✩ROSHAHFIZAN✩
33.✩NASRUN✩
34.✩JUNJIE✩
35.✩RYAN✩
36.✩STANLEY✩
37.✩WENHAO✩
38.✩LAIHUAT✩
39.✩YONGHUAY✩
40.✩LIANGJIN✩
41.✩THIRU✩
42.✩JINGYE✩
43.✩SYAHMI✩
Co Form : Miss Wang Xiao Jun
English : Miss Norazleen
Maths : Mr Goh Yong Yeu / Mr Oh
Science : Ms Judith
Physical Education : Mr Joe Tan
Literature: Miss Lim Bin
Music : Next Semester.
Geography : Next Semester.
History : Mdm Salimah
F & N : Mdm Paramjit
D & T : Mr Eric Micahel Basuki
Chinese : Ms Wang Xiao Jun
Malay : Ms Farrah
--------------------------------------
01.✩CANDY✩
02.✩CHARRISSA✩
03.✩FILIAH✩
04.✩FIONA✩
05.✩JESSIKA✩
06.✩KAR YEE✩
07.✩KHAMISAH✩
08.✩MICHELLE✩
09.✩SHERYL✩
10.✩MINGZHU✩
11.✩SURIATI✩
12.✩QUSYAIRAH✩
13.✩SALEHA✩
14.✩SYAQINAH✩
15.✩JIA HUI✩
16.✩AMANDA✩
17.✩REGINE✩
18.✩ZHI YAN✩
19.✩YASMIN✩
20.✩LI HAO✩
21.✩IVAN✩
22.✩DARREN✩
23.✩ISAAC✩
24.✩WINSTON✩
25.✩EDSEL✩
26.✩GABRIEL✩
27.✩LEON✩
28.✩EDWIN✩
29.✩JUNHAO✩
30.✩RAMADHAN✩
31.✩RIFQI✩
32.✩ROSHAHFIZAN✩
33.✩NASRUN✩
34.✩JUNJIE✩
35.✩RYAN✩
36.✩STANLEY✩
37.✩WENHAO✩
38.✩LAIHUAT✩
39.✩YONGHUAY✩
40.✩LIANGJIN✩
41.✩THIRU✩
42.✩JINGYE✩
43.✩SYAHMI✩
