... Nakamura 1969; Mitosinka et al. 1972). Several plant genera have trichomes (hairs) such as: Humulus, Cannabis, Lantana, Lippia and Anchusca (Mitosinka et al. 1972). For this reason just the presence of cystolith hairs cannot be reliable enough for the identification of marijuana (Nakamura 1969; Mitosinka et al. 1972). Observing the morphological characteristics of Cannabis sativa L. may be important in ... the drug identification especially in incidences where other characteristics are insufficient (de Pasquale et al. 1974). Observing the morphology of marijuana can also be of great lega...

• Word Count: 2467
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• Has Bibliography
• Grade Level: High School

... prove that at location of study these success ional trends are correct. The physical characteristics have a massive bearing on the vegetation and its succession, for example; soil depth. The depth of a soil for plant growth is the vertical distance into the soil from the surface to a layer that ... therefore be taken into account when selecting the area of study, and area of dunes with significant development is likely to have different physical characteristics to one which is still in its original state. These physical differences can be investigated further in terms of succession, perha...

• Word Count: 1741
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• Grade Level: High School

... Jones of the British Medical Journal. Through biotechnology scientists are able to insert a specific gene or genes into a plant and give it new advantageous characteristics. This is a more precise technique instead of mixing all the genes from two plants and seeing what comes out. "Once in ... the new plant, the new gene does what all genes do: It directs the production of a specific protein that makes the plant uniquely different."" explains ... have been placed into foods through the tools of biotechnology that are on the market are non-toxic, rapidly digestible, and do not have the ...

• Word Count: 2153
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• Has Bibliography
• Grade Level: Undergraduate

... and reforms after the spindle pulls chromosomes to opposite ends of the cell. 4. The major characteristics defining groups of Eubacteria include the nature of the cell wall, the shape of the cell, motility, and physiology. The common characteristics that eubacteria share include no nuclear membrane, they are all prokaryotic unicellular organisms, they experience no ... mitosis, and contain no membrane bound nucleus. Cyanobacteria is a gram negative bacteria with photosynthetic membranes. They lack a membrane bound nucleus and chloroplasts. Unlike other eubacteria, they are encapsulated ...

• Word Count: 1632
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• Grade Level: High School

... DNA codes) with a letter, it would take 1.7 million pages to contain all the genetic information of corn. If one were to cross two breeds of corn to get an improved plant, genetic laws state that one would end up with not 3.4 million pages but 1.7 million pages. This means that there is random retention of certain parental gene code sequences. In addition ... in different portions of the sequences juxtaposed in offspring. The breeder has no control over which sequences are kept or lost and can only choose offspring with the desired outer characteristics. In genetic engineering, the proc...

• Word Count: 1644
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• Grade Level: Undergraduate

... and pressure to achieve and please. When such expectations are not reached these could result into depression or rebellion. The individual may find an easy escape through alcohol or drugs. Plant, (1975:81), based his assumptions for drug taking as an escape from, or a reaction to, problems; a sign of social or psychological sickness or unhappiness. This family domain with ... family includes regular alcohol or tobacco use, this may set a pattern that will be learned and imitated. Parents who use legal drugs may influence their children's use of illegal ones (Plant, 1975). iii. On the oth...

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... growths. Instead of growing from seeds, bryophytes grow from spores. The nonvascular plants include mosses and liverworts. Mosses A moss is a simple rootless plant with leaflike growths in a spiral around a stalk. Moss plants are held in place by rootlike filaments or threads made up only a few ... cycle, which alternates between the spore-producing phase and sex cell-producing phase, is called alternation of generations. In bryophytes, the most visible plant is the green, leaflike gametophyte. Liverworts have a life cycle similar to that of the mosses. Asexual Reproduction In addition t...

• Word Count: 1716
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• Grade Level: High School

... latest molecular biology techniques. All living organisms have genes written in their DNA. They are chemical instructions for building and maintaining life. By modifying the genes, scientists can alter the characteristics of an organism. Scientists and farmers have been selectively breeding plants since the late 19th century through a process called hybridization. Today, plants can be bred by changing their genetic makeup ... to tolerate cold temperatures that would normally kill sensitive seedlings. Also, as the world population grows farmers will be forced to grow foods in places that...

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... film had to do with the natural history of New Zealand and how the environment has a tremendous effect upon the evolution and development upon the plant life and animal life upon these particular islands. The isolation, weather and climate changes are all discussed in the film. And also how life was ... time, the islands and the life on it went through its own evolutionary course, making New Zealand have some of the most strange and unusual plant and animal life in the world. This independent course of revolution due in part also because of the lack of human contact. Humans discovered the...

• Word Count: 1386
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• Grade Level: High School

... was trained in physics, then was recruited to a monastery to do some research in breeding plants and animals. Mendel preformed his experiments with the pea plant, and found that a basic ratio of things, such as the color of flowers, was always 1:3. This means that from every mating of two ... explained this by saying that parent plants had two factors, and that only one of the factors was passed down to the new plant. Mendel said that his factors must be present it pairs, two in each individual for each separate characteristic. He concluded that since an ... desired genotypes and phenoty...

• Word Count: 1922
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... will regrow the plants to use in any process they need to use the plant in. Farmers have always tried to use information discovered by Gregor Mendel about genetics to predict the pattern of inherited characteristics to help them control the genes their plants have.  With advancements in genetic ... engineering have made it possible to express proteins in plants to become more resistant to insects that will eat the farmer's plants or chemicals that could kill the plant (Brown, 2013). ... is learning how to genetically engineer plants to carry vaccinations that can vaccinate people who ea...

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... force genes to express their traits at very high levels, also have the potential to influence neighboring genes. The promoter, for example, accelerates a plant to produce higher levels of substance, which is harmless at low levels of a substance, however it becomes toxic when present in higher concentrations. ... insects. The caterpillar of the Monarch butterfly population farm has been shown that 40% died in 3 days when fed on its host plant which has been dusted with genetically engineered corn pollen. Opposing views say tests conclude that the pollen diminished rapidly three meters awa...

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... genetically altered with the DNA from bacteria, viruses, chemicals and other plants and animals. The purpose of this process is to make the animal or plant immune to herbicide or produce insecticide and grow faster for more profit (The NonGMO Project). A perfect example of a GMO food is the Hawaiian ... by taking a DNA extract from the ring spot virus and adding it to a papaya seed, essentially making the deadly virus now part of the plant and fruit (Hawaii Seed). Changes in plants that have been genetically altered have the potential to pose a major threat to the environment and the eco...

• Word Count: 1362
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... , forms. Coal can have a variety of different textures and can be explained by the specific type of organic material that it was formed from giving each type of coal unique characteristics. Vitrinites, inertinites, liptinites, and ash, which are comprised of inorganic matter from the Earth's crust, are a variety components that make up the different types of coal. "Vitrinites are made ... moist soil to survive. Studies have proved that clear cutting the salamanders' habitat creates dryer soil content ultimately altering their habitats" (Ash). Clear cutting also produces negative side ef...

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... been using for years-improve the quality and production of food. Earlier, farmers used crossbreeding to enhance the size, quantity and quality of crops produced by a particular plant. Today, farmers can rely on modern techniques to identify the traits responsible for beneficial features and incorporate them in the new crop. Food biotechnology is a precise science ... the many issues surrounding genetically engineered foods, and the accompanying glossary defines the terms used3. For centuries farmers have been selectively breeding plants and animals to shape the characteristics of their cr...

• Word Count: 1305
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• Grade Level: High School

... on the growth of the plants, making them grow better where they could be out of the wind. The more exposed the plant, the less fit that plant seemed to look. The most flourishing plants were protected from the wind my either other plants or by land formation. The wind ... plants energy needed to function, and these plants harness this energy along with other sources, such as, water and carbon dioxide to produce glucose. The plant organisms manufacture this substance by themselves giving them needed energy to survive. The energy from the sun starts a food chain in which many different org...

• Word Count: 1874
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• Grade Level: High School

... necessary to either the producer or consumer; It was a scheme to make more profits quickly. The formation of a cartel under these market characteristics, would have enabled the cartel to gain overwhelming market power, and would not fail in the same sense as Chicago economists believe all cartels ... variation in geographical location or time of construction. The size difference is also a factor in variations in production costs between firms. ADM's large plant was three times as big as any owned by Ajinomoto, but was more efficient in costs. Only one set of managers and executives were ...

• Word Count: 1966
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... from the two. The only native pigs to the United States is the Collared Peccary in the west. European wild hogs have several distinguishing characteristics that set them apart from domestic or feral hogs. Among these are brown to blackish brown color, with grizzled guard hairs, a mane of ... hair running dorsally from the neck to the rump, a straight heavily tufted tail, and ears covered with hair. Characteristics of feral hogs are varied, depending upon the breed of the ancestral stock. European wild hogs and feral hogs interbreed readily, with traits of European ... are often destroyed...

• Word Count: 2100
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• Grade Level: High School

... allowing weeds to survive longer, but in practice they might use the technology to wipe out all weeds, further reducing the volume of wild plant seed in agricultural areas, and reducing biodiversity further. Another potential danger was the development of crops that were tolerant of drought, heat, salt ... many public scepticism towards GM food,and the retailers drive down the price of it,which have a great effect on the farmers who plant GM food. these lead the farmer to lose in the competition instead of reducing the cost on farming which is claimed by many people ... health benefits...

• Word Count: 1627
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• Has Bibliography
• Grade Level: Undergraduate

... of the Hlsmelt technology with Rio Tinto, the leading ore supplier from Australia. Hlsmelt utilizes iron ore fines and coal to directly produce liquid iron. Rio Tinto has operated a pilot plant utilizing this technology. The Hlsmelt Technology would offer an alternative supply of high quality iron units for feedstock (Annual Report, 2001, 9). The major components of marketing, administrative and other ... management. If anyone in the company has a suggestion that will lead to better safety, their idea is embraced and they receive a bonus. Incentives are also given out to individual plant...

• Word Count: 2482
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• Has Bibliography
• Grade Level: Undergraduate

... or vegetative. The fruit have to be bagged to save the seeds because they get eaten by birds. The trees that show the desired bark characteristics that are healthy and are vigorous in growth should be the plants selected regardless of the method of propagation. Cinnamon trees are cultivated commercially by ... of the fruit where they are washed and dried. Due to the fact that the seeds are not viable for long, it is important to plant the seeds as soon as possible (Salathé 1). Prepared nursery beds with good quality soil or composted manure provide the best growing environment for the ...

• Word Count: 2100
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• Grade Level: High School

... or is made from a genetically altered organism. The most common sources of genetically modified foods are genetically modified soybeans, corn, and canola (Food Inc.). Genetic modification allows scientists to create characteristics and traits in organisms that could not naturally occur. All genetically engineered foods created so far are derived from genetically engineered plants. Without the advancement and development of techniques that ... two DNA sequences from different organisms are combined within a test tube (9-10)." Essentially, genetically modified food is the test tube baby o...

• Word Count: 1697
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• Has Bibliography
• Grade Level: Undergraduate

... aspects of the process: The desired gene is first isolated, than it is transferred using transformation techniques into the desired plant or organism. It is possible to transform almost all the plants cultivated by man. Genetic modification can efficiently add or change a gene in ... a plant to give the plant a new or improved characteristic e.g. resistance to drought or enhanced nutritional properties. Usually, these properties are due to the GMO plant creating certain proteins. While the process may seem simple, creating these crops can take ... contain about 20% more proteins includ...

• Word Count: 1396
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... in nuclear power plants, can favor aquatic life in waters that would otherwise be too cold. In a warmer body of water, the addition of heat changes the body of waters characteristics and may make it less suited to species that are living in that ecosystem. The use of chemical fertilizers, pesticides, or other materials may contribute to water pollution. Septic tanks ... . The repeated use of pesticides creates pest populations in areas that there were none previously. This happens because the pesticides destroy populations of predatory insects that had previously kept the plant-eating in...

• Word Count: 2000
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... water reactor (PWR) free of deposited corrosion products and corrosion-inducing contaminants is key to ensuring their long-term operation. New cleaning processes are becoming available to aid nuclear plant personnel in optimizing secondary side maintenance strategies. Introduction There are concerns among nuclear industry personnel that even small quantities of magnetite-based (Fe3O4) deposits increase the potential for accelerated ... mechanical and chemical cleaning methods available to remove steam generator deposits. One of these methods, steam generator chemical cleaning (SGCC), inv...

• Word Count: 1673
• Approx Pages: 7
• Has Bibliography
• Grade Level: Undergraduate