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Search results 1241 - 1250 of 1292 matching essays
- 1241: Purple Loosestrife
- ... loosestrife is now found world wide in wet, marshy places, coastal areas, ditches and stream banks. (See Figure 2) It is prevalent in most of Europe and Asia, the former USSR, the Middle East, North Africa, Tasmania, Australia and North America. It has not been found in cold Arctic regions. In North America purple loosestrife is located between the Canadian territories and north of the 35th parallel with the exception of ...
- 1242: The Hippopotamus: Endangered Species Report
- ... Brust, Beth W. Zoobooks: Hippos. San Diego: Wildlife Education, Ltd., 1989. Estes, Richard. The Safari Companion. Simon & Schuster, 1991. MacDonald, David (ed.). The Encyclopedia of Mammals. Vol. 2. London: George, Allen & Unwin, 1984. Redmond, Ian. "Africa's Four Legged Whale," Wildlife Conservastion. Jan.-Feb. 1991, pp 60-69.
- 1243: Acid Rain
- ... fog or deposited in a dry form. Acid rain is most common in North America and Europe. Acid rain has also been detected in other areas of the world such as tropical rain forests of Africa. Canada has placed limitations on the sulfur emissions. The United States has not, so the emissions may still drift into Canada. The acid rain cycle begins with hundreds of power plants burning millions of tons ...
- 1244: Do UFOs Exist?
- ... as barky, oats, canola, grass, flowers, trees, and even snow. Crop circles have appeared on every continent and have been reported in over 70 countries around the world. Only countries in mainland China and South Africa haven't reported any crop circles at all. A lot of then have appeared in the former Czech Republic . Most crop circles have been formed in the center of fields with none of the surrounding ...
- 1245: The Wolf
- ... deserts or really high mountains. At one time wolves lived mostly in the northern hemisphere in the arctic and in many other places. They may also be seen in places like Asia, eastern Europe, northern Africa and many other places that seem unusual for a wolf. A wolf can live in various types of terrain. They can live in the forests, cold snowy places, arctic tundra, and some other types of ...
- 1246: Lead and The Environment
- ... 502 oC and boils at 1740 oC. Lead is a heavy, ductile, soft, gray solid. It is soluble in nitric acid and insoluble in water. It is found in North, Central and South America, Australia, Africa and Europe. In modern times, lead has found a wide range of uses, and world demand for lead and its products has steadily increased. Lead's usefulness stems from the metal's many desirable properties ...
- 1247: Involvement of K+ in Leaf Movements During Suntracking
- ... the sun, are common among plants belonging to the families Malvaceae, Fabaceae, Nyctaginaceae, and Oxalidaceae. The leaves of many plants, including Crotalaria pallida, exhibit diaheliotropic movement. C. pallida is a woody shrub native to South Africa. Its trifoliate leaves are connected to the petiole by 3-4 mm long pulvinules (Schmalstig). In diaheliotropic movement, the plants leaves are oriented perpendicular to the suns rays, thereby maximizing the interception of ...
- 1248: Current Status of Malaria Vaccinology
- ... the whole of the whole disease. One must understand the disease and its enormity on a global basis. Malaria is a protozoan disease of which over 150 million cases are reported per annum. In tropical Africa alone more than 1 million children under the age of fourteen die each year from Malaria. From these figures it is easy to see that eradication of this disease is of the utmost importance. The ...
- 1249: Evolution
- ... memory, attention, curiosity, imitation, reason, etc. as well as progress in "knowledge morals and religion"10. Here is where originated the classic idea of the evolution of man from ape, specifically where he contended that Africa was the cradle of civilization. This work also met with opposition but because of the impact of his "revolutionary" initial work this opposition was comparatively muted11. A summary of the critical issues of Darwin's ...
- 1250: The Koala
- ... south. The koala has only one relative, the wombat. Koalas and wombats share a common ancestor from some 25 million years ago on the landmass Lauasia (an ancient landmass that separated to make South America, Africa, and Australia.) Most people think that the koala is related to bears, that is not true, the koala is an aboreal (tree dwelling) bear. Most people also think that the koala is not harmful, that ...
Search results 1241 - 1250 of 1292 matching essays
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