.... the release of vast quantities of carbon dioxide stored in vegetation and forest soils. This will add further to the climate change problem. Experts hope that this new way to cut back on these CO2 emissions will not be costly and time consuming. Dry air is made up of about 78 percent nitrogen and 21 percent oxygen. For living things, the two most important gases are oxygen and carbon dioxide. All plants and animals in respiration use oxygen. Respiration is the process by which food is changed to energy. Photosynthesis is the process by which plants m .....

.... change predictably from the "juvenile: to the "initial" subdued pattern of small adults to the "terminal" pattern in the largest adult males. The terminal male is the one with the brightest colors and gaudiest patterns. The moon seems to play an important role in fish reproduction. According to Peter H. Pressley, it appears that the moon/s light may be as important as its gravitational pull. "Some fishes may use periods of maximum moonlight for effective nest guarding during the week or so it takes for many demersal eggs to incubate. Since the larvae of .....

.... at which freezing or melting continues once it has commenced. All solids melt when heated to their melting points, but most liquids can remain liquid even though cooled below their freezing points. A liquid may remain in this supercooled state for some time. This phenomenon is explained by molecular theory, which conceives the molecules of a solid as being well ordered and the molecules of a liquid as being disordered. To solidify, a liquid must have a nucleus (a point of molecular orderliness) around which the disordered molecules can crystallize. The forma .....

.... A person with depression doesn't realize and most of the time has no control whatsoever over these feelings. They have no idea that what is wrong with them is that they have depression. They might put the blame on some other stressful thing or even other people. Changes in the level of energy a person has can be caused by depression. One possible reason for this ties into their eating and sleeping habits. If a person starts to eat less, or sleep less they will notice a drop in how much energy the have. Some people with depression may become edgy or .....

.... massive, core. A star is created when huge, gigantic, gas clouds bind together due to attractive forces and form a hot core, combined from all the energy of the two gas clouds. This energy produced is so great when it first collides, that a nuclear reaction occurs and the gases within the star start to burn continuously. The Hydrogen gas is usually the first type of gas consumed in a star and then other gas elements such as Carbon, Oxygen, and Helium are consumed. This chain reaction fuels the star for millions or billions of years depending upon the .....

.... moon in the southern hemisphere. This region is referred to as the “Highlands” of Mars. The area is pitted with numerous craters that reach between one to four km above the datum. Ejecta from the impact scatter around the crater making a rim like structure. The northern hemisphere is very low compared to the southern hemisphere. In the north the ground level rarely reaches above one km below the datum. This stark contrast between north and south is thought to have happened 3 Gyr ago. The south was continuously bombarded with meteors. The no .....

.... greatly. The severity of the HIV related illness or illnesses will differ from person to person, according many factors but mostly to the overall health of the individual. The new advances in technology are helping postpone the advancement of the disease. Lets start at the beginning. First, lets learn what AIDS is. AIDS is an acquired defect in your immune system. The passing of any bodily fluids could technically be used as a passage way for the virus. Once infected with HIV it will begin to attack your CD4+cells, commonly known as your t-cells or t-help .....

.... have developed (example, factories). These human-induced gases include carbon dioxide, methane, nitrous oxide, and ozone depleting substances such as CFCs, also known as Chlorofluorocarbons, hydrofluorocarbons, and perfluorocarbons. These gases are generated a number of human activities such as fossil fuel combustion, waste disposal in landfills, the use of a refrigerator, numerous agricultural and industrial activities, and the cutting down of numerous forests. These human practices have already changed the chemical make up of the atmosphere. Between .....