… – http://www.robtimko.com The purpose of the tutorial is about how to set UNIX file permissions and how it exactly works. UNIX file permissions, or more commonly known as "Chmoding", is a set of permissions used by the UNIX/Linux operating systems…

… nuclei, which contains chemicals and fumes. This makes the fog thicker and denser as there are far more particles. The atmospheric hydrocarbons from human activity account for only 15% of the total, but the effect they have is great because of where…

… Depression, the zoo needed to downsize and, instead of killing the primates, they sold Ishmael to a menagerie. By the change in the environment Ishmael began to realize that the tourists were visiting him, began to realize that the people recognized…

… up of farmers called Cuilotepec, who produces crops of corn, beans, and chili. Next to this, lies a volcano called Popocatépetl, which as suddenly started to shower ash, started to stir and started to shake this area. About 20 million people live…

… had stories of gigantic winged beasts soaring through the air and breathing fire. (Levy). In the past few decades, groups or individuals have set out to prove that dragons could or do exist, and have attempted to explain their habits and lifestyles…

… dope, weed, green, boom, Mary Jane, herb, buds, grass, chronic, ganja, and trees. Marijuana comes from the flowers, buds, and leaves of the hemp plant Cannabis. Smoking marijuana is almost as common as seeing someone smoking a cigarette. Some smoke marij…

… let in sunlight. The sunlight warms up objects inside the greenhouse. These objects then give off heat. The glass of the greenhouse, however, does not let out the heat. If the greenhouse lacks ventilation, all the heat stays locked inside and…

… the interactions of large bodies of matter would involve a life of quiet contemplation, removed from the petty day-to-day distractions of the working world. But being an astronomer involves more then just this. Astronomers track, study and…

… Attention Deficit Hyperactivity Disorder is the stimulant Ritalin. Use of the drug in the United States has been growing at an alarming rate since it was first prescribed for ADHD in 1981. Of the 8.5 million tons produced, over 90% of Ritalin consumption…

… as "friendly fire." Sun exposure is the main cause of skin cancer. Yeah you look great but did you ever think that you might be bad side affects. According to the National Cancer Institute, there are about 700,000 new cases of skin cancer each…