: What is the major impacts of human activity on the planet as a whole?no internet copy?and why global warming
144171
Global warming is due to the huge quantity of some kind of gaz that human activity ejects in the atmospher. That gaz in itself does not warm, but it has indirect effects: destroying the earth's protection towards these sunshines and keeping the heat of these sunshines into the earth's atmospher.\nWhy people don't care much about it? It's because they don't realize that the earth as they know it could drastically change. Until now, it took billions of years to change, so human lifetime (and even the complete human History!!!) isn't much compared to the usual scale of big climate changes. But the earth human population, its activity and its ability to pollute have increased so much that it has become possible for humanity to go straight into a wall without even realizing it!!!
983934
Global warming is caused by greenhouse gas emmisions, like CO2 and CH4, cheifly added by humans.\n\nCO2 is 30% higher than it has been for 650,000 years. Methane is 130% greater. These are two of the main pollutants humans put into the atmosphere in excess, and they are two of the primary greenhouse gases.\n\nLook at the 'hockeystick', which shows a dramatic warming since 1950 after a fairly stable climate for 1000 years. In fact, the 10 hottest years in recorded history have all happened since 1990, with 2005 being the hottest, and 2006 is shaping up to maybe break that record.\n(see links below)\n\nHow's that for proof of man's fault in this? There is ample proof, any real scientist will tell you that.\n\nThere has NEVER been an article doubting man's influence on global warming published in a peer-reviewed journal. A recent study of almost 1000 proved that.\n\nYes, the earth naturally heats and cools, but the rate and amount we are warming now is unprecedented in the recent geologic past. We are doing this, and we must stop it. This is not some political statement or rhetoric. This is science trying to educate a crass, ignorant public of the damage they are doing. The magnitude of temperature increase ALREADY is about 10x that of the 'little ice age' of the middle ages, and rate and amount are only going up. \n\nJust to be clear, glacial and interglacial cycles are mainly controlled by astronomical fluctuations, but we have a detailed record of the last 7 cycles, and what the climate and CO2 is doing now is way different and extreme. The rate of increase is much higher than in the past AND the value itself is much higher.\n\nHI CO2: \nhttp://news.bbc.co.uk/1/hi/sci/tech/4467420.stm\nHOCKEY STICK: \nhttp://news.bbc.co.uk/1/hi/sci/tech/5109188.stm\nGeneral climate stuff: \nhttp://news.bbc.co.uk/1/hi/sci/tech/3897061.stm
982
Global warming has two main applications. The first is that there are certain gases that trap heat in the atmosphere, warming planets. This is known to take place on Venus, Earth, and the gas giants. Earth is the hospitable place that it is because of global warming.\n\nThis takes place because of greenhouse gases, which allow radiation from the sun to pass through the atmosphere and warm the surface of the earth. The surface then re-radiates this energy back towards space in the infrared spectrum. This energy would escape and our planet would be as cold as the moon, were it not for the greenhouse gases (mainly CO2, ozone, methane, and water vapor). They absorb the infrared energy and radiate it back to earth, increasing the overall amount of radiation hitting the earth's surface, keeping it warm day and night.\n\nThat this takes place is clear and indisputable. There is simply too little energy coming from the sun to account for our planet's temperature. The controversial point is when global warming is applied to the current rise in average global temperature that has taken place over the past 50 so years. Most scientists believe that warming of the planet is due to increases in greenhouse gases, mainly CO2, mainly due to human activities on earth.
1174608
I've answered this question about a million times now in some form or other....\n\nThe Earth is a complex and robust system that operates with a number of positive and negative feedback systems. This means that all the systems are interconnected and all the systems change through time.\n\nWhat a lot of people miss is that humans are part of the system too. By virtue of our very existence, we change the environment.\n\nThe media has confused a lot of people about the climate-change/global warming situation. The fact is, we do know what causes global warming. Greenhouse gases like CO2. We also know that industry produces a large quantity of these gases. In fact the levels of CO2 in our atmosphere have more than doubled since the industrial revolution.\n\nNow you can sit there and tell me that Earth changes the levels of CO2 in the atmosphere naturally, and you'd be right. But does it not seem like a huge coincidence that the increase in CO2 levels, and the onset of global warming are occurring together?\n\nThe Earth is warming naturally, but it doesn't take an Earth Scientist to work out that dumping huge volumes of greenhouse gas into the atmosphere is likely to make it worse. Pretending its nothing to do with humans doesn't mean we can afford to ignore that it's happening either!
1042319
A.  All the rest have a major impact on the viability of the earth. They will effect the earth even if humans are left out of the equation.
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Human Activity\nMunicipal Wastewater and Solid waste\nLand Development\nMaterial Consumption
59118
Global warming is an increase in the average temperature of the Earth's atmosphere and oceans. The term is also used for the scientific theory of anthropogenic global warming, which attributes much of the recently observed and projected global warming to a human-induced intensification of the greenhouse effect. On this theory, the increased volumes of carbon dioxide and other greenhouse gases released mainly by the burning of fossil fuels, and, to a lesser extent, land clearing and agriculture, are the primary sources of warming. The natural greenhouse effect keeps the Earth 30 °C warmer than it otherwise would be; adding carbon dioxide to an atmosphere, with no other changes, will make a planet's surface warmer. Current research is attempting to find out more details about the processes and factors that would affect a temperature increase especially about positive and negative feedback mechanisms, to allow a more precise quantification of the effects of global warming.\n\nTemperature change is just one aspect of the broader subject of (human-induced) climate change. The scientific opinion on climate change, as expressed by the UN Intergovernmental Panel on Climate Change (IPCC) and explicitly endorsed by the national science academies of the G8 nations, is that the average global temperature has risen 0.6 ± 0.2 °C since the late 19th century, and that it is likely that "most of the warming observed over the last 50 years is attributable to human activities" [1]. A small minority of qualified scientists contest the view that humanity's actions have played a significant role in increasing recent temperatures. Uncertainties do exist regarding how much climate change should be expected in the future, and a hotly contested political and public debate exists over what actions, if any, should be taken in light of global warming.\n\nBased on basic science, observational sensitivity studies, and the climate models referenced by the IPCC, temperatures may increase by 1.4 to 5.8 °C between 1990 and 2100 [2]. This is expected to result in other climate changes including rises in sea level and changes in the amount and pattern of precipitation. Such changes may increase the frequency of extreme weather events such as floods, droughts, heat waves, and hurricanes, change agricultural yields, or contribute to biological extinctions. Although warming is expected to affect the number and magnitude of these events, it is very difficult to connect any particular event to global warming.
649669
People babble a lot on this page! If you don't know the answer properly, please don't answer!!!\n\nGo to the link below, it will tell you all about Global Warming and comes from a legitimate source.
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Here's a better answer than the one provided above, and a site that will provide the answer(s) you are looking for.\n\nHumans are using up natural resources at a great rate and at a great cost to the health of the natural environment and life on Earth.\n\nIt is not the natural resources by themselves that harm the Earth's environment -  it is what humans do with the natural resources that cause the problems to the environment and to the health of living things, including other human beings.\n\nThe burning of fossil fuels in factories to make products and power, and the fuels used by trucks, automobiles and jet planes have caused acid rain and a great increase in carbon dioxide and pollution in the atmosphere.   And forests have been destroyed which used to absorb carbon dioxide.  Carbon dioxide traps heat in our lower atmosphere.\n\nScientists believe that human activities such as these have led to global warming.
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Global warming is NOT a "natural thing."\nYes, our planet all on its own, for various reasons, does go through cycles of warmer and cooler temperatures.\nHowever, in the last 150 years we have added many billions of tons of carbon in various forms (carbon dioxide in the air is the biggest problem) to the planet's ecosphere -- more than any "natural" cause in the history of the earth.  \nI very much want to leave a habitable planet to my children, so they can do the same for theirs.  That means reducing humans' artificial climate changes which are causing a runaway greenhouse effect -- which is NOT natural.\n\nThe earth isn't going to "die" naturally for another 4.5 BILLION years or so -- why are you so relaxed about moving that deadline up by 4.9999 billion years?\n\n"only" girl -- it's not a theory, it's well proven.  You should keep up with science.
98989
I believe global warming is more natural than the enviro-Nazis are giving credit for. I believe whole-heartedly that the Earth has gone through this cycle MANY times. While our polution is having an effect, and we should not have unlimited polluting, it does not have the effect of a volcanic eruption and other natural events.\n\nI refuse to be one of those uber-whackos that thinks that we should try anything to force the human race to go back to loin cloths and spears, riding on horseback. But I also do not believe we should dump and spew everything back into the environment without thinking of the effects. There has to be a happy medium.\n\nI do not really know, as even the scientists do not really know, if we are still moving away from the last ice cycle, or we are past the opposite point and we are moving back towards another ice age. In any case, we need to try and understand it more, and the effects of everything more.\nGood question though.
457897
No.  If the planet were on a cooling trend, and stayed that way for a while, it might be heading towards a periodic Ice Age, as it has done in the past.  We would consume a lot more of outr limited energy resources just to keep ourselves warm.  Also, don't worry so much about Global Warming.  As I said before, nature goes through these cycles of warming and cooling.  Yes. humans have an impact, but it is small.
1050878
causes: -The climate system varies both through natural, "internal" processes as well as in response to variations in external "forcing" from both human and non-human causes, including solar activity, volcanic emissions, and greenhouse gases. Climatologists agree that the earth has warmed recently. The detailed causes of this change remain an active field of research, but the scientific consensus identifies greenhouse gases as the primary cause of the recent warming. This conclusion can be controversial, especially outside the scientific community.Adding carbon dioxide (CO2) or methane (CH4) to Earth's atmosphere, with no other changes, will make the planet's surface warmer; greenhouse gases create a natural greenhouse effect without which temperatures on Earth would be an estimated 30  °C (54  °F) lower, and the Earth uninhabitable. It is therefore not correct to say that there is a debate between those who "believe in" and "oppose" the theory that adding carbon dioxide or methane to the Earth's atmosphere will, absent any mitigating actions or effects, result in warmer surface temperatures on Earth. Rather, the debate is about what the net effect of the addition of carbon dioxide and methane will be, when allowing for compounding or mitigating factors.Due to the thermal inertia of the earth's oceans and slow responses of other indirect effects, the Earth's current climate is not in equilibrium with the forcing imposed by increased greenhouse gases. Climate commitment studies indicate that, even if greenhouse gases were stabilized at present day levels, a further warming of perhaps 0.5  °C to 1.0  °C (0.9–1.8 °F) would still occur.\neffects: -The predicted effects of global warming are many and various, both for the environment and for human life. These effects include sea level rise, impacts on agriculture, reductions in the ozone layer, increased intensity and frequency of extreme weather events, and the spread of disease. In some cases, the effects may already be being experienced, although it is difficult to attribute specific natural phenomena to long-term global warming. In particular, the relationship between global warming and hurricanes is still being debated. [21] [22] A draft statement by the World Meteorological Organization acknowledges the differing viewpoints on this issue [23].The extent and likelihood of these consequences is a matter of considerable controversy. A summary of possible effects and recent understanding can be found in the report of the IPCC Working Group II [24]. Some scientists believe global warming is already causing death and disease across the world through flooding, environmental destruction, heat waves and other extreme weather events.
545771
Effects of deforestation.\n\nthis can be a local problem with global consequences.\n\ncan be biology and chemsitry (maybe physics as well, heat flows etc.)
527546
Greenhouse gas emissions -> Leads to global warming.  Which destroys many parts of the the world's eco-systems already, it will eventually impact humans soon too.
1054449
Global Warming is the increase in temperatures in our climate within our atmosphere. It is caused by liberal politicians and environmental wackos from the US and other western countries yakking, crying and complaining about how our modern way of life ( i.e. anything from industrial, technological and day to day conveniences ) is polluting and destroying the planet. The toxic gasses produced by all their whining and complaining is filling up our atmosphere with warm unfilthy air. The result is a "greenhouse" effect. All that hot, vile and unhealthy  gasses coming out of their mouth is a danger to us all. As a sidebar, I have to note that the environmental wackos and the liberal politicians have different agendas as to why they are crying and complaining, but that is another topic all together. \n\nSo in short, Global Warming is caused by hot air coming out environmentalist and left-wing politicians mouths when whining and complaining about anything. Solution: shut them up. \n\nWhat effect does it have in a million years: it will stump human and humanities growth
720744
How about the effects of globalization on the developing world?\n\nThe effect of global warming on the Arctic