.... me to determine the range of frequencies that a bullfrog can hear using operant conditioning. Once I have determined the latter, I would like to see how well a bullfrog is able to distinguish a specific frequency from other frequencies. For both experiments, I would need to obtain a number of bullfrogs from a natural habitat and place them in the lab made habitat, which would be similar to the one that they were removed from. Hopefully, the frogs will adapted to the new habitat and carry on as they did in their old habitat. Tampered bullfrogs such as those raised in labs or pets would not be used because the results would be inaccurate. The inaccuracy wou .....

.... or not present at all. When symptoms do arise, in men, it is usually a clear or white discharge from the penis or a swelling of the testicles, which can lead to infertility if left untreated. 75% of women with the disease show no symptoms. In those that do, it is usually a yellow discharge from the urethra, painful urination, or painful sex. ½ of all cases of pelvic inflammatory disease, which leads to an ectopic pregnancy in pregnant women, is caused by . Ectopic pregnancy is the leading cause of death of pregnant teens in the inner city and poor neighborhoods. also causes conjunctitis. This is a swelling of the eyes which can lead to blindness .....

.... universe was to revolve around the sun (an error on Copernicus's part... only our solar system revolves around the Earth -- not the universe!) then all of his mathematical formulas would become more "aesthetic". Thus, he composed the theory, which led to great controversial book "On the Revolutions of Heavenly Spheres" in which the church was greatly angered. While Copernicus's book was not a revolutionary book, it was, however, a catalyst to make other minds ponder the new Heliocentric theory. After Copernicus's death there were three other scientists which helped credit the Heliocentric theory. Tycho Brahe was the first, he played with the idea that t .....

.... a specific chemical reaction. The molecule (s) on which an enzyme acts is known as its substrate. For example, sucrose is the substrate for the enzyme sucrase. have specific structures that only its specific substrate will fit into. The polypeptide chains of an enzyme are folded in such way that they form a grove or pocket on the surface. The substrate fits in to this grove, which is the site of reactions catalyzed by the enzyme, or active site. Recent studies of enzyme structure have suggested that the active site is flexible. The binding between and substrate appears to alter the shape of the enzyme. This induces a close fit between the active si .....

.... combined with other elements. resembles calcium chemically. The metal of oxidizes very easily and should be kept under petroleum or other suitable oxygen-free liquids to exclude air. is used mostly with other elements. It is used in metallurgy, and its some of its compounds are used in pyrotechnics, and petroleum mining. Another one of its uses is as a getter in vacuum tubes. ’s sulfate is used in paint and in glassmaking. Barite is extensively used as a weighing agent in oilwell drilling fluids. The carbonate has been used as a rat poison, while nitrate and chlorate give colors in pyrotechny. The impure sulfide of radiantly glows after exposure to the l .....

.... needs to touch two hairs once or one hair twice in order to spring the trap. The trap will close in less than a second, in ideal conditions, and if an insect is caught, the trap will seal shut and start secreting digestive juices. If the trap closes empty, it will slowly open in about a day. It may take a week to digest a housefly, and when the trap reopens, the shriveled shell of the insect is left behind. A trap may catch and digest up to three insects, after which the leaf turns black. Older leaves blacken and die regardless of how many insects are caught and the plant continually sends out new leaves during the growing season. Venus flytraps usually gro .....

.... around 1989, and it has stuck ever since. Unfortunately, this catchy name has caused people to dream up incredible uses for this technology including using it as a sort of drug. This became evident when, among other people, Timothy Leary became interested in VR. This has also worried some of the researchers who are trying to create very real applications for medical, space, physical, chemical, and entertainment uses among other things. In order to create this alternate reality, however, you need to find ways to create the illusion of reality with a piece of machinery known as the computer. This is done with several computer-user interfaces used to simu .....

.... will be expressed by the supporters. A well known scientist named Neal D. Barnard said," The use of animals for research and testing is only one of many investigative techniques available. We believe that although animal experiments are sometimes intellectually seductive, they are poorly suited to addressing the urgent health problems of our era, such as heart disease, cancer, stroke, AIDS and birth defects." He goes on further to say that animal experiments can not only mislead researchers but even contribute to illnesses or deaths by failing to predict any toxic effect on drugs. The majority of animals in laboratories are used for genetic manipu .....