.... such feats as flips and quick turns without losing any air. Manatees have no hind legs, but instead one big, flat, spatula-like tail (Sentman 327). This feature made people confuse manatees with mermaids for nearly four centuries (O'Shea 66). Many biologists say that manatees possibly originated or evolved from ungulates such as elephants and cows because of the way that they are built, and certain features that they have in common. Like elephants, manatees have the peculiar half-moon shaped fingernails, and thick, wrinkled skin. Manatees also shares some traits with cows. The way the mana .....

.... spirit theory, writings from the early Babylonian, Egyptian, and Chinese civilizations have also shown evidence that was believed to be a possession by demons-using beatings, restraint, and starvation to try to drive out the evil spirits. These beliefs somewhat cooled down as time continued to move on, but once again popped up as America was starting to be formed. In 1692 and 1693 the Salem witchcraft trials began. At this point in time was suggested to be associated with the devil, so those with es were thought to be witches. Those who were thought to be witches were given unfair tria .....

.... 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 irregular heartbeat. Where lifts your spirits, when it wears off there can be bouts of depression. If drank too close to bedtime, can disrupt your sleep. You can get the shakes from . Recent studies have failed to find any relationship between and strokes o .....

.... of subjects. There are some basic rules guiding how deceptions can be carried out. There is a large section of the code that was made with regards to animal research. The last major section of the ASA ethical guidelines has to do with giving credit where credit is due, and information sources. All of these regulations make research safer for the subjects and increase the effectively of psychological research. In psychological research, protecting subjects dignity is very important. Without willing subjects the research process would be brought to a halt. In order to protect the subject .....

.... a force makes the object change its state of rest or motion. This means the rocket balloon won't start until you let go of the closing (hole). It wont stop until it runs out of air or something is in the way of its' path. The second law of motion is: The acceleration of an object increases as the amount of force causing the acceleration increases. This means the more air in the balloon the farther and faster it goes. The third law of motion is: For every action force there is an equal and opposite reaction force. This means, if you let go of the balloon, something would slow or stop i .....

.... to be the cause of a disease. is a very large, gram positive sporeforming rod. The organism is cultivated on ordinary nutrient medium and grows best aerobically, but can also multiply under anaerobic conditions. The disease, Anthrax, is very deadly but it is rare. The risk of infection is 1/100,000. The disease is acquired when spores from a contaminated animal carcass inoculate an open wound. Then, the spores germinate and invade the blood stream, leading to death within 48 hours. is classified as a harmful, pathogenic bacterium. There is a vaccine for Anthrax in humans, but it produces .....

.... wood subject. The exact species of the tree is unknown; however, it was a very hard wood and a light brown/tan color. Initially, medium pressure was used on the flake and it was moved in bi-directional strokes across the stick. After about thirty strokes, the use edge angle prohibited the flake from cutting further in to the stick. The cut was roughly three millimeters deep and three quarters millimeters wide. It could be determined that a tool, in this particular shape, could not be used as an effective saw. However, use-wear patterns could still be inferred. The flake was m .....

.... sent up two rockets toward Mars and both were failures. Due to the failures, time has been given for scientists to blueprint a credible and step-by-step search for life on the Red Planet. Without the pressure to return Martian samples to Earth any time soon, new schemes for automated, on-the-spot detection of past or present Mars life can be flown. Recently, two probes were sent back and they made it to Mars. They landed on the South Polar Caps of Mars. That is where NASA plans to find water. After landing on Mars, the probes extracted water like crystals from the surface of Mars. Th .....

.... winds, returning to Earth as acid rain, snow, or fog. This effects the lakes by changing the pH balance. As the water pH approaches 6, crustaceans, insects, and plankton begin to disappear. When the pH is slightly above 5, major changes start to happen, less desirable species of mosses and plankton may begin to flourish, whereas others will lessen in numbers and die off. Below pH of 5, the water is to acidic for many fish, the bottom is covered with undecayed material, and the shores may be dominated by mosses. Animals also are affected. Some ducks, for example, depend on fish and .....

.... which water has a constant low pH level) this makes them susceptible to acid rain because of their limited ability to neutralize acidic compounds. This results in many lakes and streams being completely dead of fish and all other living things. Acid rain also greatly contributes to forest degradation, even more so to high-elevated trees, it also impairs the tree growth. Acid rain effects forest soil. As acid moves through soils, it strips away vital plant nutrients through chemical reaction, resulting in a threat to future forest productivity. Acid rain is also capable of eroding metals, i .....