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What is the reason for the upward trend in atmospheric carbon dioxide since the late 1800s?
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What makes African violet leaves stand up?
The reason they are reaching to the sun, they need more light, but not direct sunlight or they will receive burned spots. They know somehow that reaching upward they will get more light.
What northeastern state bordering new jersey has the motto ever upward?
New York State Motto is "Excelsior" which means "ever upward".
What are the release dates for Emergency - 1972 Upward and Onward 6-22?
Emergency - 1972 Upward and Onward 6-22 was released on: USA: 2 April 1977
What will be the direction of the magnetic field if the current is directed upward?
wew
What is the motto for the british Virgin Islands?
forward,upward,onward togetherThe Bahamas real motto, which was adopted in 1973 along with the flag and the country is "Forward, Upward, Onward, Together"
What happen during exhalation?
The act of exhalation itself is caused by the diaphragm relaxing and pushing upward on the lungs, forcing air out of them. This air is loaded with carbon dioxide, a dangerous waste product, so that is eliminated.
Why does the amount of carbon dioxide in the atmosphere goes down during the summer months?
The amount of atmospheric carbon dioxide follows a slow upward trend, superimposed by a saw-tooth pattern with a peak during the northern hemisphere summer and a low during the northern hemisphere winter. These short term fluctuations are due to the vigorous growth of plants during the warmer months. The sourthern hemisphere does not balance this effect because many of its evergreen trees continue to grow all year around, and because of the smaller land area.
When the supply curve is upward sloping?
Supply curve will be upward sloping in two reason,the first reason is know as the income effect and the second is know as substitution effect.
When a person drinks a soft drink through a straw where does the force came from that causes the soft drink to move upward?
Atmospheric pressure
What contributes to atmospheric carbon dioxide?
In the absence of anthropogenic activities, carbon dioxide (CO2) levels in the atmosphere would be fairly static. Animals exhale carbon dioxide, but vegetation converts this back into edible products that are then consumed by those animals. Similarly, rotting vegetation gives off carbon dioxide, but the vegetation is soon replaced by new vegetation that requires the same amount of carbon. The natural cycle contributes no net increase in carbon dioxide concentrations in the atmosphere. Even burning wood or paper has no net effect on atmospheric concentrations of carbon dioxide, although cutting down trees for wood or paper could do so if new trees are not allowed to grown and absorb as much carbon as the trees cut down. So, CO2 concentrations had remained around 260-280 parts per million (ppm) until the time of the Industrial revolution, when the level of CO2 began to rise in line with increasing use of fossil fuels. The increase from 260-280 ppm to the present 390 ppm of atmospheric carbon dioxide is almost entirely due to human activities. The main cause is by burning fossil fuels such as coal, oil and natural gas. Another important cause is deforestation, mainly as land-clearing for farming. _______________________________________________________________ There is absolutely zero scientific evidence to make the claim that carbon dioxide has ever been "fairly static". The science behind the levels of carbon dioxide differ vastly from the political viewpoint stated. CO2 has varied by about 800 years behind temperature. This is a well known trend for the past 650K years according to all available data. The current upward trend started well over 10,000 years ago, shortly after the temperatures started to rise. Carbon dioxide has always followed temperature. With the current warming trend now at over 10 degrees C, it is a normal and expected occurrence that CO2 levels would eventually follow. Levels as low as 190 ppm have been observed in the past 10,000 years, as well as levels (reported by Noble winning science experts from the 1800's) of well over 400 ppm. (Beck 2008). The overall trend for CO2 has been upward almost non stop for the past 9,300 years. There have been fluctuations, but this is the undisputed trend. Man's production of less than 6% of all CO2 is possibly a partial contributor to the current levels of CO2. That is a very possible scenario. Nature's production of 94% is a known cause of increase. To blame man as the sole reason for increase though is misleading and absolutely false. We know that the levels of CO2 rose over 100 ppm prior to man starting to use any coal. The one undisputed fact of CO2 increase is the know relationship between temperature and the levels of CO2 in our atmosphere. Temperature causes CO2 to rise. This is a known event. Human additions are a speculative (albeit possible) issue.
Why is there so much more carbon dioxide on Venus than Earth?
Venus has a stronger greenhouse effect than Earth because the atmosphere of Venus consists of about 96.5% Carbon Dioxide (CO2), which is a greenhouse gas, and the planet itself has virtually no water. Earth's atmosphere, by comparison, only contains about 0.03% CO2 and is comprised of about 70% water.Since Venus' atmosphere contains so much CO2, a vast majority of the infrared (heat) radiation that is radiated back upward from the surface after sunlight hits it, gets absorbed, redirected and essentially trapped within the atmosphere. As a result, temperatures within the atmosphere and on the surface rise to very high levels. Only when the temperature builds up so high, to about 730K (or 456.85°C), can heat finally begin to breakthrough and escape, thus leveling off the temperature.It is this high temperature that has basically boiled almost all of the water from Venus' surface and which also helps to contribute to the already massive greenhouse effect because water helps to control atmospheric CO2 by absorbing it.
Why have greenhouse gases increased so much in the past 100 years?
There have been a lot of upward trends in the past 100 years - population, industrialization, use of motor vehicles - each of thee contributes to GHG emissions, particularly carbon dioxide. In addition, the deforestation of many areas of the world either through logging, climate shifts or the increasing need for agricultural land has reduced the ability of the eco-system to absorb carbon dioxide. Still in the carbon dioxide sequestration area, changing farming practices have reduced the amount of carbon retained in the soil. Even more, the thawing of much of the permafrost in North America and Europe/Asia has liberated methane, a potent GHG with 21 times the impact of carbon dioxide. Then again there are new GHGs which were not even thought of 100 years ago - substances like CFCs and SF6 - which are very potent GHGs.
What is the difference between upward and downward delivery?
If you r talking about gases Downward delivery:-collecting gases which are denser than air. e.g. carbon dioxide, chlorine. upward delivery :-collecting gases which are less dense than air. e.g. hydrogen.
Why is carbon dioxide collected by downwards delivery?
Carbon dioxide (CO2) is collected by downwards delivery because it is heavier than air. Almost all of our atmosphere is nitrogen (molecular mass = 28) and oxygen (molecular mass = 32), but CO2 has a molecular mass of 40.
What could be the reason that the root of the mangrove plant to be growing upward?
it neads air instead of soil
Is the pressure in the atmosphere constant?
No. In fact, variation in atmospheric pressure is one of the most useful forecasting tools there is. A low pressure center might have a pressure of, say 990 mb. This indicates inflow and upward flow, which goes along with a storm. A hurricane could be as low as 900 mb at the center, which indicates REALLY strong inflow and upward motion. A high pressure center, which might typically have a pressure of 1020 mb indicates descending air, which becomes hot and dry as it falls. Take a look at a surface pressure map at http://weather.unisys.com/. Vertically, the pressure differences are even more dramatic. At approximately 5.5 km above the surface, the pressure is about 1/2 of what it is at the surface. Typically, meteorologists talk about the height of a surface with constant pressure, but the idea is the same.
Why is the slope of water negative?
For water the line has a negative slope (vs carbon dioxide). This explains why ice floats since volume decreases with increasing pressure as we move upward on the phase diagram from solid to liquid water, the volume occupied by H20 decreases and thus water must be increasing in density.
