What is global warming and how is it made worse by deforestation?
Answer:
Global warming is the general warming of the earth and water. It is caused by excessive production of gases like carbon dioxide produced by industry, motor vehicles and wood and coal burning.Trees help reducing the amount of carbon dioxide that escapes into the atmosphere by feeding on it in the daylight to make food for themselves. The gases in earth's atmosphere act as shields to prevent heat escaping into the outer space and thus heat up the earth.
Global warming is the warming of the planet by the green house effect, Its the CO2 trapped, which reflects the sun heat into space therefore earth heats up. Deforestation, firstly limits trees which absorb the co2 and gives out o2. Some say the Amazon is the earths lungs.therefore less trees to take the co2 for photosynthesis more co2in the atmosphere. Secondly the lack of trees prevents the absorption of water by soil. Therefore soil turns into desert in time. Therefore water rises in rivers and the flooding. Global warming if not stopped temperatures will rise and extreme weathers will occur.My Human biology teacher said if not stopped humans will die in a biblical scale.
Global warming is the theory that the Earth is getting warmer, through the emissions of greenhouse gases such as carbon dioxide. Deforestation makes it worse because trees turn carbon dioxide into oxygen.
Global warming means the planet is heating up. The icebergs and the snow at the north and south poles are melting. The sudden change in global warming causes very wet and windy weather. you could google your search for any information you may required.
Global Warming is a lie perpetrated by governments to charge the common man more illicit taxes. The holes in the ozone layer above the earth are caused by USA rockets into outer space every month to build their spacestaion.
However, deforestation in South America means that less trees to absorb CO2 during the day and emitting oxygen at night. Also the Gulf Stream used to flow up the Atlantic passed Ireland and UK but now appears to flow straight up to the Arctic cause Ice to melt and the seas to rise.
All this because of the USA's greed for hardwoods are the trees in South America being chopped.
Global warming is the increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation.
Global average air temperature near the Earth's surface rose 0.74 ± 0.18 °C (1.3 ± 0.32 °F) during the past century. The Intergovernmental Panel on Climate Change (IPCC) concludes, "most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations,"[1] which leads to warming of the surface and lower atmosphere by increasing the greenhouse effect. Natural phenomena such as solar variation combined with volcanoes have probably had a small warming effect from pre-industrial times to 1950, but a small cooling effect since 1950.[2][3] These basic conclusions have been endorsed by at least 30 scientific societies and academies of science, including all of the national academies of science of the major industrialized countries. The American Association of Petroleum Geologists is the only scientific society that rejects these conclusions,[4][5] and a few individual scientists also disagree with parts of them. [6]
Climate models referenced by the IPCC project that global surface temperatures are likely to increase by 1.1 to 6.4 °C (2.0 to 11.5 °F) between 1990 and 2100.[1] The range of values reflects the use of differing scenarios of future greenhouse gas emissions and results of models with differences in climate sensitivity. Although most studies focus on the period up to 2100, warming and sea level rise are expected to continue for more than a millennium even if greenhouse gas levels are stabilized. [1] This reflects the large heat capacity of the oceans.
An increase in global temperatures can in turn cause other changes, including sea level rise, and changes in the amount and pattern of precipitation. There may also be changes in the frequency and intensity of extreme weather events, though it is difficult to connect specific events to global warming. Other effects may include changes in agricultural yields, glacier retreat, reduced summer streamflows, species extinctions and increases in the ranges of disease vectors.
Remaining scientific uncertainties include the exact degree of climate change expected in the future, and how changes will vary from region to region around the globe. There is ongoing political and public debate regarding what, if any, action should be taken to reduce or reverse future warming or to adapt to its expected consequences. Most national governments have signed and ratified the Kyoto Protocol aimed at combating greenhouse gas emissions.
DEFORESTATION
Environmental effects
Atmospheric pollution
Deforestation is often cited as one of the major causes of the enhanced greenhouse effect. Trees and other plants remove carbon (in the form of carbon dioxide) from the atmosphere during the process of photosynthesis. Both the decay and burning of wood releases much of this stored carbon back to the atmosphere. A.J.Yeomans asserts in Priority One that overnight a stable forest releases exactly the same quantity of carbon dioxide back into the atmosphere. Others state that mature forests are net sinks of CO2 (see Carbon dioxide sink and Carbon cycle). Deforestation caused by humans is estimated to contribute to one-third of all carbon dioxide. The water cycle is also affected by deforestation. Trees extract groundwater through their roots and release it into the atmosphere. When part of a forest is removed, the region can not hold as much water and can result in a much drier climate.
Wildlife
Some forests are rich in biological diversity. Deforestation can cause the destruction of the habitats that support this biological diversity - thus causing population shifts and extinctions. Numerous countries have developed Biodiversity Action Plans to limit clearcutting and slash and burn agricultural practices as deleterious to wildlife, particularly when endangered species are present.
Hydrologic cycle and water resources
Trees, and plants in general, affect the hydrological cycle in a number of significant ways:
their canopies intercept precipitation, some of which evaporates back to the atmosphere (canopy interception);
their litter, stems and trunks slow down surface runoff;
their roots create macropores - large conduits - in the soil that increase infiltration of water;
they reduce soil moisture via transpiration;
their litter and other organic residue change soil properties that affect the capacity of soil to store water.
As a result, the presence or absence of trees can change the quantity of water on the surface, in the soil or groundwater, or in the atmosphere. This in turn changes erosion rates and the availability of water for either ecosystem functions or human services.
The forest may have little impact on flooding in the case of large rainfall events, which overwhelm the storage capacity of forest soil if the soils are at or close to saturation.
Soil erosion
Deforestation generally increases rates of soil erosion, by increasing the amount of runoff and reducing the protection of the soil from tree litter. This can be an advantage in excessively leached tropical rain forest soils. Forestry operations themselves also increase erosion through the development of roads and the use of mechanized equipment.
China's Loess Plateau was cleared of forest millennia ago. Since then it has been eroding, creating dramatic incised valleys, and providing the sediment that gives the Yellow River its yellow color and that causes the flooding of the river in the lower reaches (hence the river's nickname 'China's sorrow').
Removal of trees does not always increase erosion rates. In certain regions of southwest US, shrubs and trees have been encroaching on grassland. The trees themselves enhance the loss of grass between tree canopies. The bare intercanopy areas become highly erodible. The US Forest Service, in Bandelier National Monument for example, is studying how to restore the former ecosystem, and reduce erosion, by removing the trees.
Landslides
Tree roots bind soil together, and if the soil is sufficiently shallow they act to keep the soil in place by also binding with underlying bedrock. Tree removal on steep slopes with shallow soil thus increases the risk of landslides, which can threaten people living nearby.
'Global Warming' refers to an environmental state which is too warm for the environment to stay at the level all mammals have adjusted to. Deforestation takes away the trees that help to keep carbon dioxide from inhabiting the air and causing climate change.
watch PBS they talk about global warming a lot. it's a scary scenario that does not look so good for mankind. however the more we know about what to do and not to do the better we will be later. it's maybe not to late if humans can change. and to start we must find alternative fuels. and leaving the rainforest intact and planting more trees alll over the place. newer cities are moving towards more green spaces where plants are encouraged rather than pavement.
Global warming is exactly what it implies - the earth warming up. This is caused my numerous green house gasses when they are put into the atmosphere. One of the leading causes is carbon dioxide. Trees store carbon dioxide. When they are cut down, all that carbon dioxide inside them, that they were storing, is released into the air. This is not good, because the more carbon there is, the more global warming. global warming = big bad major problme.
A recent study found that forest the the northern parts of the world actually contribute to global warming by trapping the heat. This causes ground tempatures to remain higher than they would if there were not trees. Also the snow that would be on the surface if there were no trees helps reflect the suns rays back away from the earth, instead the trees absorb all this heat and keep it on the surface contributing to global warming. This is not made up this is from a recent study. You think Algore will put this in his movie.
Oh and that guy that said the rainforest are the earths lungs is stupid. The earth gets most of it's O2 from the ocean and plankton. We could cut down everytree on earth and there would be enough oxygen to breath.
Is Global Warming happening? - YES
Are we the cause? - NO
Can we stop it? - NO
It is a natural process.
Global warming is the cause of the greenhouse effect. Deforestation destroys trees, which suck in carbon dioxide.
Global warming ,sweetie, is a raise in the Global temperature due to emission of Green house gases like carbon di oxiode.
The carbon di oxiode is released by usuage of petrol,diesel etc .
Now,these carbon di oxiode is absorbed by plants ,to produce food.
But ,human beings along with emitting carbon di oxiode,r also cutting trees ,that is deforestation.
As ,a result there is no one to absorb excess carbon.
which results in GLOBAL WARMING.
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