.... can be used to help improve soil, and destroy harmful insects. Copper can also be used to help protect other materials against corrosion, and in small amounts is vital to all plant and animal life. The properties that make copper extremely useful include - Conductivity - Silver is the only better conductor, but is too expensive for common use. Copper also conducts both electricity and heat extremely well, which makes it extremely useful for cooking utensils, radiators, and refrigerators. Malleability - Copper is highly malleable. It does not crack when ha .....

.... defenses of past and current creatures. They gained further insight into how immunity works. The most basic requirement of an immune system is to distinguish between one's own cells and "non-self" cells. The second job is to eliminate the non- self cells. When a foreign object enters the body, several things happen. Blood stops flowing, the immunity system begins to eliminate unwanted microbes with phagocytic white blood cells. This defensive mechanism is possessed by all animals with an innate system of immunity. Innate cellular immunity is believed to be t .....

.... framework and hence are incapable of understanding them, much less relating it to others. It is questionable because this model maintains that because (a) one is having problems of functioning as a healthy human being and (b) one remembers being abused as a child that therefore (A) one was abused as a child and (B) the childhood abuse is the cause of one's adulthood problems. There is no evidence that supports the claim that we remember everything that we experience. In fact, there is plenty of evidence to support the claim that it is imposs .....

.... victims. Neurofibrillary Tangles are also found in the brains of Alzheimer's victims. They are found within the cell bodies of nerve cells in the cerebral cortex, and take on the structure of a paired helix. Other diseases that have "paired helixes" include Parkinson's disease, Down's syndrome, and Dementia Pugilistica. Scientists are not sure how the paired helixes are related in these very different diseases. Neuritic Plaques are patches of clumped material lying outside the bodies of nerve cells in the brain. They are mainly found in the cerebral corte .....

.... in turn activates and lights the top LED (the HIGH indicator). Logic probes derive their operating power from the PCB under test. Care should be taken in attaching the clips to safe voltages; you may want to first use a Volt Meter (Digital Multi Meter) to verify the hook up points have good voltages. The four diodes protect the IC from reverse polarity. Capacitor C1 prevents transient voltage from affecting the logic probe when the black lead is not connected. Pin 5 of the 555 IC is grounded through resistor R1. The logic probe will indicate a HIGH for 2V or gr .....

.... implemented a dioxin minimization program in the mid-1980s and completed a modernization program in 1993 that will reduce water usage and discharges. About 94% of the estuaries and sounds in North Carolina fgully support designated uses. Agriculture, urban runoff, septic tanks, and point source discharges are the leading sources of nutrients, bacteria, and low dissolved oxygen that degrade estuaries. About half of the people in North Carolina use ground water as their primary supply of drinking water. Ground water quality is generally good. The leading source o .....

.... a miscarriage by using samples of maternal blood instead of amniotic fluid. The problem with amniocentesis is it uses a hollow needle to take fluid from the mother's uterus. The needle could damage the developing fetus if not inserted properly. Another advantage of FISH is that the parents get a much quicker test result than amniocentesis. After the sample is taken, amniocentesis can take up to three weeks before a test can be administered. With FISH, a same day result is given, which is much more convenient to the parents. Additionally, FISH is a simpler process. It uses specially prepared molecules .....

.... Shakespeare took readers back six hundred years before the birth of Christ and told of a boy named Arraign, who was cast into the sea by pirates. A dolphin came to his rescue and carried the boy home to Greece on his back. Plutocrat wrote Thathos, Odysseus' son, was saved from drowning as a young child through the aid of a dolphin. A roman scholar Plink the Elder, who lived in AD 23-69, wrote about a boy named Hermias. Hermias had many encounters with a friendly dolphin which he would except rides from. One day Hermias was thrown off the dolphins back by a .....