.... is generally formed, how it functions, and the effects it has on the universe. In order to understand what exactly a black hole is, we must first take a look at the basis for the cause of a black hole. All are formed from the gravitational collapse of a star, usually having a great, 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 c ....

.... Over time more and more people looked into and they developed possibilities of how it occurred. Many theories were developed, but someone always disproved them. Recently with the discovery of genetic mutation and a new understanding of genes and DNA, the evidence supporting evolution has greatly increased. Charles Darwin was one scientist who helped to increase the evidence supporting evolution. Darwin developed the idea of “natural selection” where living things that reproduced in large numbers and survived became dominant and other living things adapted to survive, or they died. Francis Crick, a scientist, co-discovered DNA which opened new doors to the ....

.... 11). Fortunately though, 85% of all depressed people that do get help can be helped to a significant degree (Salmans 75). Finally, in 1970, they saw depression as a disorder in young peoples (Stewart 8). Even babies can become depressed if they’re neglected. Many young people that suffer from depression turn to suicide. 5,000 young people take their lives each year (Stewart 9). The rate of suicide dealing with teenagers, 15-19, has tripled in the past 30 years (Salmans 40). Suicide is the 2nd leading cause of death among older teens (Stewart 9). Depression isn’t the only reason for suicide though. Depression has many effects on a person, both physically and ment ....

.... or phytoplankton which lives on carbondioxide dissolved in the seawater. Oceans absorb up to 2 billion tons of carbon dioxide a year, making the sea one of the Earth's key defenses against global warming. Oceans have a great potential for heat storage, the top two or three meters hold as much heat as the entire atmosphere. This warmth is continuously redistributed by surface and convection currents. Without the ocean there would be no life on land. Most of Earth's living space, is ocean, about 97%. And also 97% of Earth's water is ocean. There is a greater variety of living creatures in the ocean than anywhere on land. Scientists say that (including microscopic creatu ....

.... the stomach and intestines into the bloodstream which then gets distributed to all the organs of the body. In the bloodstream travels to the liver, where it is converted into a number of breakdown products where it is excreted in the urine. Many people like to start their day with coffee. It's probably not so much the taste rather is the jolt it gives them. Unfortunately, has undesirable effects. A mug of coffee can increase urination as much as 30 percent for up to three hours. Large fluid losses on a hot day can lead to dehydration. Increased stomach acid can aggravate ulcers or hightail hernia, and cause nausea, vomiting and diarrhea. can cause an accelerated and ....

.... hardly knew of. Many didn't know entirely what kind of effect it might have later in life. But after a while, some professional athletes and high profile people started showing the side effects that are associated with them. For example, Lyle Alzado, a popular star in the NFL, developed a brain tumor and died. Also one of the greatest bodybuilders of all time and famous actor, Arnold Schwarzenegger, had to have an operation to repair an aortic valve in his heart. This scared a lot of people and the recreational uses of steroids decreased. With the dangers of steroids well-known people started looking for other substances to give them an edge. Bee pollen, carnitine and ch ....

.... for a cell to use as energy. These sausage-shaped organelles are not a true organelle, but more of a parasite that invaded primordial cells and evolved along with them. A mitochondrian’s main purpose is to burn energy through a slow method of combustion, which will consume as much air to burn as fire will, just to break down nutrients into simpler substances. These simpler molecules then bond with the atoms that will need the energy to function. Then, enzymes in the mitochondrion break up the atoms and then recapture them again. This time, the energy atoms will be bonded in a different molecule to form ATP, or adenosine triphosphate. ATP has an adenosine core and ....

.... All over Europe and South America there is evidence left behind by the ancient people of these great civilizations.par tab First, a look at whether there is or could be intelligent life on other planets. It is conceivable that we world citizens of the twentieth century are not the only living beings of our kind in the cosmos. Because no alienspar from another planet is on display in a museum for us to visit, the answer, "our earth is the only planet with human beings," still seems to be legitimate and convincing. But that is a very narrow-minded way to look at things. The idea that life can flourish only under terrestrial conditions has been made obsolete by research. ....