.... help decide whether or not a person is fitted for a certain job. Psychologists help people with emotional problems to understand the basis of their difficulties. This understanding often brings a solution to the problems. A psychologist's specialty and place of employment determines their working conditions. Clinical, school, and counseling psychologists in private practice have pleasant, comfortable offices and set their own hours. However, they often must offer evening hours to accommodate their clients. Those employed in hospitals, nursing homes, and other health facilities may work evenings and weekends, while those who work in schools and clin .....

.... cockroach species in the world. About 55 live in the U.S., and only 4 species ar common household pets. German cockroaches or Croton bugs, are common in the U.S. especially in the northern states. They commonly enter the house in bags or boxes from grocery stores. They tend to cluster in warm moist places around hot water pipes. They stay hidden when they are not eating. Eat Crickets will eat holes in paper or in garments especially those soiled with persperation. They also eat young roots and seedlings, peanuts, garden crops, grain, clothing, and sometimes other insects and even each other. Grasshoppers are a different story. They eat crop .....

.... hydrogen, 11% helium and the remainder comprises traces of methane, ammonia, ammonia crystals , and such other gases as ethane acetylene, and phosphine. has an average temperature of negative one hundred and seventy six degrees Celsius below zero. On the surface of planet winds can reach up to nine hundred mile per second. also has a jet stream. 's magnetosphere consuts of a set of doughnut-shaped radiation belts in which electrons and atomic nuclei are trapped. The belts extend more than two million kilometers from the center of and even farther in the direction away from the sun, although the size of the magnetosphere fluctuates, depending on th .....

.... control unit wire. The repeated abrasion had exposed two tiny sections of wire. A spark alone would not cause a fire, but just below the cuts in the cable was a length of aluminum tubing, which took a ninety-degree turn. There were hundreds of these turns in the whole capsule. The aluminum tubing carried a glycol cooling fluid, which is not flammable, but when exposed to air it turns to flammable fumes. The capsule was filled with pure oxygen in an effort to allow the astronauts to work more efficiently. It also turns normally not so flammable items to highly flammable items. Raschel netting that was highly flammable in the pure oxyg .....

.... required that a system be created that could aid in the aiming of ballistic military equipment. Today’s modern computers are undoubtedly the result of the United States military’s early developments and technological advancements in computing. Because of the military’s need for the computer earlier this century, great advancements have been, and will continue to be made in the way of computers and other technologies. Truly the first computers, or tools made with the intention of being used for calculating, were made many centuries ago. Throughout history, people have used a diverse array of devices to help them do both simple and complex calcula .....

.... two protons fuse, forming a deuterium nucleus which has a proton, neutrino and lots of energy. I have no idea what a deuterium nucleus is, but is must be 10 times cooler than just a regular nucleus. Such a reaction is not self sustaining because the released energy is not readily imparted to other nuclei. thermonuclear fusion of deuterium and tritium will produce a helium nucleus and an energetic neutron that can help sustain further fusion. This is the basic principal of the hydrogen bomb which employs a brief, controlled thermonuclear fusion reaction. This was also how the car in the Back to the Future movie worked. It had a much more sophis .....

.... air in the form of currents. There needs to be a large supply of moisture, as it is necessary for condensation to take place in order to release latent heat and it is the latent heat that initiates the development of the storm and consequently produces heavy rainfall. When the hurricane reaches its maturity an eye develops in the centre, in the eye there is a relative area of subsiding pressure. Which is what causes clear skies, anomalous high temperatures and light winds. Eventually the eye disappears as a result of the descending air increasing instability, which in turn warms and increases the storms intensity. Around the eye there are towering Cum .....

.... the evidence, and took it to the laboratory where it was analyzed. The jury determined that the samples were contaminated because of the way they were handled. DNA Typing is not perfect. There are many loop holes in it. An example is the O.J. Simpson trial. During the process the DNA may be tampered with or damaged. In most rape cases DNA Typing is used by taking semen off the body of clothes then amplifying the genes. The machine that copies the DNA is called the PCR. The DNA is then cut and placed the wells in trays. PCR copies the small pieces of DNA. It is performed by a blotting process. This process has 21 different catogories. .....

.... of mercury is 200.59. Mercury comes in its pure form or combined with silver in small amounts. It is mostly found in the form of the sulfide. Mercury has many uses and is a very important element. A major use of mercury is in electrical equipment such as fluorescent lamps, and mercury batteries. Mercury is used in thermometers because the change in volume for each degree of rise or fall in temperature is the same. The use of mercury in the thermometer instead of alcohol was done by Gabriel Daniel Fahrenheit in 1714. It was also used in vacuum pumps, barometers, and electric rectifiers and switches. Mercury is used in a mercury-vapor la .....

.... (which states that elements show a regular pattern when they are arranged according to their atomic masses). Mendeleyev wrote a two-volume book called Principles of chemistry (1868-1870), which later became a classic. These books included an improved version of the periodic table. Sir Joseph Thomson, another important person in the development of the atomic theory, was born in 1906. Thomson won the Nobel Prize in physics (1906) for his work in the conduction of electricty through gases. He discovered the electron by using cathode rays. An electron is the smallest particle of an atom, the charge on an electron is negative. Ernest Ru .....