Smog creates many harmful health effects to human beings, it can cause anything from minor pain to deadly diseases such as lung cancer. When an area becomes covered in smog, people feel the effects immediately. But there are many different kinds of pollution, some visible, some invisible — that contribute to global warming. Generally, any substance that people bring into the atmosphere that has damaging effects on living things and the environment is considered air pollution.
Another pollutant associated with climate change is sulfur dioxide, a component of smog. Sulfur dioxide and closely related chemicals are known primarily as a cause of acid rain. But they also reflect light when released in the atmosphere, which keeps sunlight out and causes Earth to cool. Volcanic eruptions can spew massive amounts of sulfur dioxide into the atmosphere, sometimes causing cooling that lasts for years.
In fact, volcanoes used to be the main source of atmospheric sulfur dioxide; today people are. But a result, not predicted until recently, is that the lower sulfur dioxide levels may actually make global warming worse.
Just as sulfur dioxide from volcanoes can cool the planet by blocking sunlight, cutting the amount of the compound in the atmosphere lets more sunlight through, warming the Earth. Only two main components, viz. Carbon exchange across water-air interfaces is a fairly slow process and this is why the carbon cycle occurs more or less independently in aquatic and terrestrial ecosystems.
Forests and woodlands of the world contain about X 10 9 tonnes of carbon. The amount of dry organic matter is estimated to be about double of this figure.
This compares with X 19 9 tonnes of carbon existing in the form of carbon dioxide in the atmosphere. About one-third of the organic carbon occurs in forests, one-fourth in oceans, one-fourth in atmosphere, and the rest in grasslands, tundra, or other surface covers. Recent estimates indicate that burning of fossil fuels increases the carbon dioxide concentration of the atmosphere by about 0. This is partly fixed by photosynthesis in forests and partly buffered in oceans. In fact humans exhale carbon dioxide; we are constantly exposed to carbon.
Some meteorites contain microscopic diamonds that were formed when the solar system was still a protoplanetary disk. Microscopic diamonds may also be formed by the intense pressure and high temperature at the sites of meteorite impacts. Another fascinating fact about carbon versatility the different forms pure carbon come in. The properties of some chemical elements to exist in two or more different molecular forms are known as allotropes.
Allotropes are different structural modifications of an element. For example, carbon has three well known allotropes such as a diamond, where the carbon atoms are bonded together in a tetrahedral lattice arrangement. Another allotrope that we use every day is graphite, where the carbon atoms are bonded together in sheets of a hexagonal lattice, and fullerenes, where the carbon atoms are bonded together in spherical, tubular, or ellipsoidal formations.
Amorphous carbon is formed when a material containing carbon is burned without enough oxygen for it to burn completely. This black soot, also known as lampblack, gas black, channel black or carbon black, is used to make inks, paints and rubber products. It can also be pressed into shapes and is used to form the cores of most dry cell batteries, among other things. A fourth allotrope of carbon, known as white carbon, was produced in It is a transparent material that can split a single beam of light into two beams, a property known as birefringence.
Very little is known about this form of carbon. New tests of carbon nanotubes, which are tiny cylinders expected to revolutionize medicine, electronics, and warfare. More tests reveal that, ounce for ounce, they are times stronger than steel and 30 times stronger than Kevlar used in bulletproof vests. The nanotubes, roughly 50, of which add up to the width of an average strand of human hair, are already known for their strength based on earlier tests on Kevlar-coated multiwalled carbon nanotubes.
Recent discoveries in carbon nanotube technology have shown the potential to alter drug delivery and bio-sensing methods for the better, thus, carbon nanotubes have recently garnered interest in the field of medicine. So why does carbon seem to have such a bad rap today in our culture?
On the other hand, many of the more common carbon compounds exhibit strong toxicological effects, such as inhaling coal dust for extended periods of time. Unless you are a coal miner it should not feel like such a threat. Yet our media cannot quit saying this word. There are two parts to a carbon footprint. The primary footprint is our direct use of fossil fuels, such as when you use your car or ride in an airplane.
In the case of carbon footprint it is the amount of Carbon Dioxide or other carbon compounds (green house gases) emitted into the atmosphere by human activities. By simply going about our daily lives of driving to work or running home appliances we are producing more CO2 because each is powered by energy that rely on the combustion .
Free Essay: Because carbon footprints are such hot topics in the news these days, it's an ideal topic for this particular paper. As concerns about global.
Free carbon footprint papers, essays, and research papers. Essays from BookRags provide great ideas for Carbon essays and paper topics like Essay. View this student essay about Carbon.
A carbon footprint is the amount of carbon dioxide (CO2) emitted as a direct or indirect result of an activity (Yarrow, Joanna. How to Reduce Your Carbon Footprint: ). Earth’s biological cycle produces carbon dioxide and supports plants and other microorganisms to grow (Walser, Maggie L. " Carbon Footprint."). Essay on carbon Each engenders at least all of the work. And it is useful to create a landscape contains fields, valleys, and rivers, all in fine detail.