... cubes and shavings will absorb the heat in the box and store the excess heat allowing the flow to continuously warm the oven. The tin foil will reflect heat and subsequently heat up the oven. The polyurethane material will trap the heat inside the oven. The mirrors will help the heat stay inside the box. Materials used: Shoe Box Tin Foil Sheets of Glass Charcoal Cubes and Shavings Scissors Glue Knives Polyurethane Non-Glossy, Black Spay Paint Four (4) Wood Pegs Mirrors Sealer ...
... 6.5 miles above the planet's surface. The troposphere contains the oxygen that we breath and is where a majority of our weather takes place. Beyond the troposphere is the second region of the atmosphere, the stratosphere. The stratosphere extends from roughly 6.5-30 miles from the earth's' surface. The air on this region is much less dense than in the troposphere, and it's a lot drier. The stratosphere is the area that contains the majority of the ozone layer. Past the stratosphere is the mesosphere which extends to 50 miles above the planet. The last region is the thermosphere. The thermosphere's outermost edge is roughly 600 miles above the surface of the ...
... toward the red end of the spectrum. Hubble attributed this shift to the doppler effect. Hubble saw this and concluded that all galaxies are rushing away from us and the universe is expanding as a whole. Modern equipment has observed and verified this so-called Hubble expansion exists throughout the observable universe. This shows three important things. First there is no significance to the fact that earth seems to be the center of the universal expansion. In any galaxy it would look as if you were standing still and all others were rushing away from you. Second the movement of the universe is not like an explosion. Galaxies are not moved through ...
... 37 SPECIATION vs. CONVERGENT EVOLUTION ....................... 39 CONCEPT OF ADAPTATION ..................................... 41 PUNCTUATED EQUILIBRIUM .................................... 43 VALUE/LIMITATIONS: THE THEORY OF BIOLOGICAL EVOLUTION .... 45 ALTERNATE EXPLANATIONS OF BEING ........................... 47 CONCLUSIONS ............................................... 48 INTRODUCTION Theories explaining biological evolution have been bandied about since the ancient Greeks, but it was not until the Enlightment of the 18th century that widespread acceptance and development of this theory emerged. In the ...
... one X chromosome is absent or is damaged. OTHER NAMES Depending on the doctor, Turner's Syndrome may be diagnosed with one of the following alternative names: 45 - X Syndrome, Bonnevie- Ulrich Syndrome, Chromosome X, Monosomy X, Morgagni-Turner-Albright Syndrome, Ovarian Dwarfism, Turner Type, among others. SYNDROME CHARACTERISTICS A reduced growth in height is the commonest visible characteristic of the syndrome, (the average adult height is 4 feet 8 inches) and may be the only sign before puberty. Their body proportions are normal. Girls with this syndrome may have many middle ear infections during childhood; if not treated, these chronic infections could cau ...
... Homininae, whose members are then called hominines—the practice that is followed in this article. An examination of the fossil record of the hominines reveals several biological and behavioral trends characteristic of the hominine subfamily. Bipedalism Two-legged walking, or bipedalism, seems to be one of the earliest of the major hominine characteristics to have evolved. This form of locomotion led to a number of skeletal modifications in the lower spinal column, pelvis, and legs. Because these changes can be documented in fossil bone, bipedalism usually is seen as the defining trait of the subfamily Homininae. Brain Size and Body Size Much of the huma ...
... The devastation of the rainforest may be compared to playing a game of Russian Roulette. One-forth of existing medicines comes from tropical plants whose homes are in the rainforests of South America. For every acre that is lost in the burning season, there is one acre less that we have for possible life saving medicines. About 70 percent of plants used in anti- cancer drug come are the rain forest. We are slowly destroying the environment and ourselves. Whether we realize it or not, the world could quickly come to an ecological stop. Every day 144,000 acres of the rainforests are cut down, slashed and/or put up in flames. In 1974, Brazil started a forest fi ...
... into tadpoles. At this stage they have gills, no legs, and a tail. As they mature, their gills and tail disappear, and they develop lungs and legs. This period of tadpole life can be divided into three stages. The first stage, called “ premetamorphosis,” lasts about 50 days (Patent 54). The second stage, in which the hind legs grow, is called “prometamorphosis,” and lasts about 21 days. When the legs are about as long as the body, the third stage, which is called “ metamorphic climax,” and takes place very rapidly, begins. During this last stage, which lasts about a week, many great changes occur. They lungs complete their development, and the gil ...
... is used as an alternative to laying new collection pipes. This waste water system is designed to be totally self sufficient in meeting the needs of the occupants of the house. Large metallic cisterns, which store rainwater, are placed near the front of the house in such a way that it creates an entranceway into the house that lets visitors know the occupants concern for the environment. Along side the huge silver cisterns is the waste water cleaning system that was designed to be as aesthetically pleasing as possible through the use of indigenous plants. The plants gradually clean the wastewater as it passes under their roots. Along with cleaning the wate ...
... linked to the opposite end of the deoxyribose. There are 4 nitrogen bases called adenine, guanine, thymine, and cytosine. In DNA adenine pairs with thymine and guanine with cytosine. Medicine's ability to diagnose continues to exceed its ability to treat or cure. For example, Huntington's Chorea is an inherited disease that develops between the ages of 30 and 45, can be diagnosed before any symptoms appear. This can be hard for both the individuals with the disease and their family. There is a 3 billion dollar project underway right now called the Human Genome Project, a 15 year program to make a detailed map of every single gene in human DNA. With automated ...
