 |
There are two classes of fishlike creatures in the Chordate Phylum. The first is Chondrichthyes Class, which comprises mainly of Sharks and Rays. The seconds is the common Bony fishes of the class Ostechithyes. The apparent similarities between each speech are only skin deep. They have similar dapperly solely because of convergent evolution and...
Irrigating Crops with Seawater Brown J. Jed, Glenn Edward P., and O?Leary James W. 1998. Irrigating Crops with Seawater. Scientific American. ?Irrigating Crops with Seawater? talks about the global problem of finding enough water and land for the world?s population to survive. An estimated 494.2 million acres of cropla...
In 1802 a farmer called Anton Mendel lived in mid-Czechoslovakia, in a small village called Hyncice. After being in the war, Anton built a house and farmed his forty acres of land: ploughing, cultivating and trying to improve his stock of farm animals. Anton was interested in fruit growing. There he would experiment with new...
is what we see. It can be thought of either as a particle, (the photon), or as a wave. The photon we can easily think of as a small dot travelling through space at the speed of light. Each photon has a particular colour or energy. But how do we think of light as a wave? For this we need to know that light is also an "Electro-magnetic field" --...
The Care It Takes Taking care of an elderly person can be a difficult thing to, do especially when they have a disease called 's. According to the Encarta Encyclopedia, "'s is a disease marked by progressive loss of mental capacity." This is the exact problem that the Grandfather, Michael McMahon, has in the story Grand Opening. It is no...
Cancer is not a single disease. It includes a large group of varied disorders that share major traits. The first sign of cancer is an enlargement of the area. The tumor then infects other cells near it, and if it's really advanced, these cells may break away from the tumor and spread the cancer throughout your body. Although many people believe...
Environmental demand for cleaner air has put a heavy burden on the automobile, much improved by stringent exhaust stands but still a significant source of pollution. High cost, technological obstacles and the resistance of the public to abandon gasoline have deterred the discovery of new cleaner alternative fuels to help 5the envir...
is a very common skin disease. It can come in the form of blackheads, whiteheads, red spots and even boils (nodules or cysts). Although anyone can have acne, the majority of the cases are found in teenagers. Most of the problems are found on the face, chest, upper back, and shoulders. These regions of the body are most common because they...
In appearance the Jaguar is often confused with the Leopard both cats, depending to a degree on sub-species have a similar brownish/yellow base fur colour which is distinctively marked with dark rosette markings. However, the jaguar can be distinguished by the presence of small dots or irregular shapes within the larger rosette markings, a more...
Flying Pins are insects belonging to the order Diptera. Only females bite. Female mosquitoes have a long piercing proboscis (mouthpart) they use to extract blood from other animals. After mating with a male, the female needs a meal of blood to keep her developing eggs healthy. Male mosquitoes do not have a proboscis which allows them to...
The I'm going to talk to you about the , Where it lives, how it hunts, how the grass helps the cheetah, mating, and what you can do to help the endangered species. The (Acinonyx Jubatus) is the fastest land mammal on earth, capable of speeds of 60-70 miles per hour. s live 12 years (17 in captivity) and mature at 20-23 months of a...
HYDROLOGIC CYCLE The hydrologic cycle is a constant movement of water above, on, and below the earth's surface. It is a cycle that replenishes ground water supplies. It begins as water vaporizes into the atmosphere from vegetation, soil, lakes, rivers, snowfields and oceans-a process called evapotranspiration. As the water vapor rises it conden...
Human Origins For years, the evolution of human beings has been researched and studied. In today's society, there are many different interpretations on creation and how humans came to be what they are today. Through much scientific evidence and studies, there is now physical proof that human beings may have evolved from ape-like creatures. E...
Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist named George Ernst Stahl was the first to...
