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Genetic Diversity In Agriculture

... gene pool to meet ever changing needs. A gene bank is a popular term that is used to describe repositories for genes of living organisms. It is commonly used in the context of plant breeding as I described above, but it also applies to the freezing and the storage of animal sperm and embryos for use in animal husbandry or artificial insemination. An understanding of crop origins and variations is necessary in assembling genetic diversity in plant crops. In certain geographical areas there has existed a rich source of variability in c ...

Number of words: 709 | Number of pages: 3

Cladocerans

... serve as locomotory organs and the first antennae are vestigial in females and not much larger in males. are parthenogenic and for most of the year populations consist entirely of females which reproduce asexually. As winter (or sometimes spring) approaches males appear and sexual reproduction occurs typically involving the production of resistant, over-wintering eggs. Such eggs are usually enclosed in a purselike ephippium that rests in the sediment at the bottom of the lake or pond until spring at which time the eggs hatch. 1. Daphnia magn ...

Number of words: 1562 | Number of pages: 6

The Downy Woodpecker

... Like the hairy woodpecker, the downy beats a tattoo on a dry resonant tree branch. This drumming is the downy's song, though they do make some vocal noises. They have several single-syllable call notes which include tchick, an aggressive social note; a tick and a tkhirrr, which are alarm notes. There is also a location call, known as a "whinny", made up of a dozen or more tchicks all strung together. Scientific Names The downy woodpecker's scientific name is Picoides pubescens. There are also six particular downies with six particu ...

Number of words: 3725 | Number of pages: 14

Extra-sensory Perception

... cannot be reproduced under controlled situations. It has many believers and non-believers, but it is a often explored subject that interests people of all ages. Parapsychology is one of the most interesting of all sciences. "Most sciences try to explain observable phenomena, parapsychology tries to observe unexplainable phenomena." (http://wheel.ucdavis.edu) This science is widespread throughout the world and pops up in many different cultures. "Scientific methodology in this field dates from the foundation in London of the Society for Psychi ...

Number of words: 1599 | Number of pages: 6

Environmentalism

... it; however, myself and others have different views on this matter. Some people realize that problems exist, but most are cynical the process of fixing them. Rather than sharing constructive criticism about what should be done, they simply mock the existing methods. Some people think that by fixing one problem we are undoubtedly creating another one. One writer uses the analogy of a â€śmixing bowlâ€ť to describe the earth. This â€śmixing bowlâ€ť that is our earth is constantly being manipulated to create the perfectly balanced â€śmixtureâ ...

Number of words: 746 | Number of pages: 3

Desert Biome

... Iquique in northern Chile showed no rain for a period of four years. The fifth year brought 0.6 inches (1.5 centimeters), making a five-year average of 0.12 inches (0.3 centimeter). At another time 2.5 inches (6.4 centimeters) fell in a single shower. " (Compton's Encyclopedia) Temperatures range widely in deserts. The greatest daily fluctuations occur in deserts near the equator. Temperatures above 100o F (38o C) occur regularly in summer. "Azizia, 25 miles (40 kilometers) southwest of Tripoli, in Libya, holds the record with 136.4o F (58o C) ...

Number of words: 839 | Number of pages: 4

Polio

... endangered or are now extinct. As a result of developments, governments have passed laws to limit or reverse the threat of environmental pollution. Even though people are trying to help this problem time canâ€™t be turned back and much damaged has already occur. Air Pollution Factories and transportation (like cars or planes) depend on huge amounts of fuel every year. When these fuels burn they introduce smoke and other, less visible, by-products into the atmosphere. Although wind and rain occasionally wash away the smoke given off by pow ...

Number of words: 732 | Number of pages: 3

Bernoulli Principle

... is the angle of attack. The angle of attack is the degree measure from the horizontal that a wing is elevated or declined. When the angle of attack is between 1 and 20 degrees, the most lift is generated. To find the lift generated by a particular area of wing in a standard airfoil shape, a teardrop with the fat end facing forward, the equation L=Cl 1/2 (pV2)S. Cl is the lift coeficent, which is determined by the shape of the airfoil and the angle of attack. P stands for the air mass density, V for the velocity of the air passin ...

Number of words: 579 | Number of pages: 3

Biotechnology

... 9, which allows the patient to heal from wounds. Scientists may now insert a gene into the patients own DNA causing the patient to heal skin, which has been impossible until now, with Genetic-Engineering. I doubt that there have been any real disadvantages with this technology, since it works to heal the patient, but we really can't predict what kind of medical misfits there will be in the future, using this life-saving technology to their own personal, perhaps evil, advantages. Dealing with politics, Bioengineering has opened a whole new ...

Number of words: 770 | Number of pages: 3

Orangutans

... isolated the orangutan reproductively and geographically from one another creating a "degree of difference" or two subspecies. There are several different characteristics between the two subspecies of orangutans and it has recently been suggested that they may be a separate species. The Borneo male has relatively large cheek pads, a tremendous laryngeal sac and a square shaped face. The Sumatran male has small pads and laryngeal sac, a ginger coloured moustache, a pronounced beard, and a diamond shaped face. Individuals can also be dis ...

Number of words: 1005 | Number of pages: 4

Volcanos

... may erupt from a volcano are; 1. lava, 2. rock fragments, and 3. gas. Lava Lava is the name for magma that has been released onto the Earth's surface. When lava comes to the Earth's surface, it is red hot and may have temperatures of more than 2012 degrees Fahrenheit. Fluid lava flows swiftly down a volcano's slopes. Sticky lava flows more slowly. As the lava cools, it may harden into many different formations. Highly fluid lava hardens into smooth, folded sheets of rock called pahoehoe. Stickier lava cools into rough, jagged sheets of ...

Number of words: 1350 | Number of pages: 5

Is Development Methodologies In Financial

... 1,400 staff at its purpose built headquarters in Chester, and has dedicated financial services areas in 70 M&S stores across the country. The Information Systems department has 50 employees who come from analysis, design, & programming backgrounds, much of which has been gained with Marks & Spencers plc. The majority of these employees are based in the Chester head office, and systems are developed ‘in-house’. IS projects under development include the introduction of Individual Savings Accounts, with other likely future projec ...

Number of words: 2415 | Number of pages: 9

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