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Hydroponics: Advantages of Producing Crops Through Use of Hydroponics HYDROPONICS derives its name from the Greek HYDRO-PONOS meaning water/labor. Literally, "Hydroponics" means "Water Work." There is no soil in a hydroponic garden. No organic matter is present so nourishment (Nutrient) is not available to the plants in the same was as it is in a soil garden. Instead, nutrients are added to the water. So, as plants are watered, they are also fed. There are many ways to feed and water plants....
The Effects and Dangers of Contracting Scarlet Fever Scarlet Fever is a contagious disease caused by the same bacteria that causes strep throat. This bacteria is called group A beta-hemolytic streptococcacus (Balentine and Kessler 1). This bacteria usually starts in the tonsils or pharynx. "Transmission is most commonly via airborne respiratory particles and can be spread from infected patients, as well as asymptotic carriers. Infection rate increases in overcrowded situations (eg, school or...
Epilepsy is a neurological disorder characterized by synchronized excitation of large groups or neuron. To reduce seizures, patients are given drugs that act on the neurotransmitter GABA. How does this type of drug control seizures? Describe seizures and the drug effects on them in terms of synaptic transmission. This type of drug is very effective in prevetning seizures. A patient being treated for epilepsy is given drugs that act on the neurotransmitter GABA. GABA receptors are...
This essay provides a course outline by answering 11 questions regarding teaching math at the seventh-grade level. Teaching Math I Introduction This paper doesn’t follow our usual format; instead, it answers specific questions regarding teaching math to seventh-graders. In working on the outline, I’ve also tried to be aware of the commonalities among math, science and technology, and provide meaningful “real life” responses. As a general observation, it seems that...
Natural Selection and Diseases Cystic fibrosis, Tay-Sachs, and hypertension are three very different, yet deadly diseases. The question arises how these diseases have survived for so long. Three articles attempt to uncover the mystery behind these diseases. It has been found that there were benefits to each of these diseases, which allowed the allele to remain in the community for such a long period of time. Natural selection plays a large part in the success of these conditions. First,...
Hydrogen Fuel Why are we as Americans so afraid to change? Even if it is a change for the better? The world has been using oil coal and other petroleum products to power just about everything that moves for the last 150 years. Yet most cars in the United States only get 10-20 miles a gallon and even the "good" ones can get only a petty 20-50 miles a gallon. So why do we put up with the inefficiency when there are far better alternatives out there? Hydrogen, the first element of the periodic...
Brief Explanation of Titration Titration is the addition of an acidic solution to a basic solution or when you add a basic solution to an acidic solution. Titrations are used to determine the concentration of acids or bases in solution. An example of a titration is when a given volume of a solution of unknown acidity may be titrated with a base of known concentration until complete neutralization has occurred. This point is called the equivalence point and is generally determined by observing...
Heart Cell Regeneration Italian and American Researchers demonstrated last year that heart muscle cells multiply after a heart attck, and now they have evidence that primitive cells travel to the new heart in a transplant patient and grow new muscle and blood vessels. The evidence comes from male transplant patients that received hearts from women; when male cells were discovered in the donated female hearts. This is the first evidence in humans that human hearts can regenerate. The...
Introduction Aspirin was the first drug to come in common usage and it is still widely used in the world. It is a pain-reliever that reduces fewer and is an inhibitor of platelet aggregation. It is an ingredient in a large pain-relieving and cold/flu preparations. Nowadays doctors often prescribe it as a valuable medicine to prevent heart attacks and it is under examination for other medical conditions such as cancer and diabetes. Aspirin was origined from a willow tree (herbal...
Evolution is defined as genetically based change from generation to generation. IF and ONLY if you look exactly the same as both your parents and they look exactly the same as your grandparents and so on back to the beginning of life (however you define that beginning) can you say that evolution has not occurred. Since I assume you are an organism born on this planet, and that you are a human being, rather than some clonal organism (one that reproduces by budding or similar method), I assume...