Sunday, June 1, 2008

Building Reptile Terrariums For Kids

So you've finally talked your Mom and Dad or your Teacher into getting you a pet for your home or classroom, and you're thinking of something a little different. How about a reptile? They don't take up much space, are fun to watch and you will have fun building them a fascinating terrarium environment as well.

If you want to put together your own Reptile Terrarium there are some things to think about..

  • Most reptiles need a place to bask. Many reptiles are active during the daytime and love to sit under a light, so you'll need to provide one of these for your Reptile Terrarium. Being cold-blooded, reptiles need some heat to get their blood moving and to help them digest. A reptile basking lamp of the appropriate wattage should be placed in the center or off to one side of the terrarium so you can see your pet reptile easier (not hidden in the background). An interesting place for your reptile to sit and bask under the lamp would perhaps be an unusual piece of driftwood, a bamboo root, a jungle vine or even a twisted tambora wood root.
  • Reptiles need a place to hide. Like you, your pet will probably want some time to be alone and a couple of hiding places should be provided in their home. Think about having some pieces of wood or vines in their home with holes or spaces behind them for your pet to snooze in. Pet reptiles love to explore all the nooks and crannies you have put in their cages, so have fun designing a really nice terrarium.
  • Reptiles need a place to watch the world from. Your reptile will love having a place to run up and look down on the rest of his home from. Think about placing something inside the area which is fairly high but can easily be scampered up. A real jungle vine put into the terrarium at an angle will also give your pet reptile the opportunity to get a little closer to the light and warm up on chilly days.
  • Create a terrarium that looks natural. Reptiles are not your traditional domesticated pets, and many of them come from the wild. So it makes sense to provide a home for them that looks like one they would have lived in, if they were living in the wild. Decorating your reptile terrarium with natural products is not only fun, but helps to make your reptile pet feel more secure and enjoy his new home. Try mixing together a variety of stone, jungle vines and root hiding places and more to create an unusual and lifelike environment for your reptile pet.
Do It Yourself Guide on How to Create a Great Reptile Terrarium
  • Place a good base of bedding on the bottom of your new reptile tank. Calcium sand, aspen bedding and reptile bark all make good bedding choices for reptile terrariums. But speak with your local pet store or read more about the species of reptile pet you plan to house, so you know for sure what he/she will like the best. It is sensible to use bedding that is easy to replace when cleaning time comes around. Tropical moss, bark chunks or leaves provide an interesting addition to the base bedding as long as they are thoroughly cleaned before being placed into your reptile terrarium.
  • Place your basking lamp on the top above the screen to provide loads of light and warmth for your reptile to warm up to. Again,' its best to talk with your local pet store, or read up on the species you plan to keep to ensure you choose the right kind of lighting/heating so your pet reptile stays happy and healthy for many years to come.
  • Choose a selection of natural terrarium decorations for your pet to play on, hide in, scamper over and bask on. Stones, slate pieces, bamboo roots, jungle vines and hollow logs are ideal additions to any reptile terrarium. Make sure these are placed in the reptile tank carefully so they are stable and will not wobble or fall and hurt your pet.
  • Keep it clean. Don't forget to remove uneaten food and waste from the cage quickly. Rotting slices of fruit or vegetables, or dead bugs are just not nice to look at (and your Mom or Teacher will complain too). Just like caring for other pets, a clean environment is very important for pet reptiles too. Think about where you will place your feeding bowls or where the water is going to be placed in the cage.
  • Ventilation is important so choose a reptile cage or aquarium that has plenty of ventilation.
  • Choose your reptiles well and make sure they are species that are easy to care for and will live for many years in the type of reptile terrarium you plan to build. Also keep in mind that many reptiles are sold as babies that will grow quickly and need a bigger enclosure soon. When that time comes, you may wish to expand or purchase a new cage for your reptiles, and add some new terrarium decorations to their environment.
  • Keep it looking fresh. Replace any decorations that have become worn or tired looking. Your reptiles will love a new and exciting change from time to time.
Most importantly!!! Enjoy your new pet reptile and ensure their home is as fun for your pet reptile to live in as it is for you to watch!

Eco Terrarium Supply offers a large variety of natural terrarium decorations to create an exciting reptile enclosure. Check out the selection of real jungle vines, decorative bamboo roots, terrarium backgrounds, hiding places, tropical moss and rock products to enhance your pet reptiles natural terrarium environment.

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Possibility Of Human Embryo With Three Parents Examined

Technology is taking all efforts to create healthy babies. From animals to humans, more discoveries are coming out in the open. Even in the formation of a human being, science is intervening to prevent deformities in fetuses before their birth.

To remedy thousands of hereditary diseases being transmitted to newly born babies, British scientists are looking into the possibility of creating a human embryo with three parents as a means to correct genetic deformities within five years.

Newcastle researchers in northern England used in vitro fertilization (IVF) or test tube embryos from a male and two other females using a combined DNA and their findings were recently presented at a medical conference in Medical Research Council Centre for Neuromuscular Diseases conference in London.

As a way to prevent mothers from passing on to their offspring possible genetic defects and diseases, this experiment was conducted as mitochondrial DNA deformities responsible for diseases can be eliminated. According to statistics, one in every 5,000 or 0.02 percent of the population of babies being born in the world may suffer from mitochondrial diseases in the form of several diseases such as liver, kidney, heart or brain disorders. Others suffer from speech and hearing impairment or muscular defects or some form of epilepsy.

If this study will be successful, the scientists are looking forward that this will help in providing better techniques in preventing such diseases in new born babies in three to five years from now.
Mitochondria are essential since they are good sources of energy. If they are found faulty, this means they will not be able to use food and oxygen well in the body. As this happens, toxins may build up and later lead to numerous deadly diseases.

Researchers said such instances can be prevented once the embryos with problems are given sufficient attention through mitochondrial transplant. This is done through IVF and the removal of egg's nucleus. The removed DNA can be replaced by healthy DNA from the donor egg.

In the normal setting, the fetus receives nuclear DNA or genes from his biological parents. But with the use mitochondrial DNA, it comes from a third party.

Dr. Patrick Chinnery said it is like taking away the diseased mitochondria and being replaced by healthy ones from a donor.

This study is still in its preliminary stages and will be subject for a series of tests. But other critics are opposing the idea for possible creation of designer babies that might have other problems in the long run.

Maynard Joseph Delfin finished AB Journalism (cum laude) at the University of Santo Tomas. He has worked as book editor, deskman, copy editor and research and publications officer in leading publishing and research companies in the Philippines. Read more of his blogs at http://maynard_delfin.instablogs.com

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Biology Experiments for Teachers. Binocular Vision, Eye Dominance and Location of Stimuli

Binocular Vision: Experiment

(a) Keep both eyes open and hold a pen or pencil upright at arm's length.

(b) Quickly move the pencil to come exactly in line with a more distant vertical object, such as a window frame or lamp-post.

(c) Close and open the left eye.

(d) Close and open the right eye.

(e) Note any change in the apparent position of the pencil and whether it was the closure of the left or right eye which produced it.

(f) Which eye did you use in lining up the two objects?

Discussion

Although both eyes are kept open to line up the pencil and the distant object, only one eye, the dominant eye, is used to determine the alignment. When this eye is closed, the pencil will appear to 'jump' sideways. It is closure of the dominant eye which produces the jump because, according to the eye now remaining open, the pencil and distant object are not in line. If the student is slow to line up the two objects he or she may be aware of a double image of the near object. Nevertheless, the student is still likely to select the image from the dominant eye.

Awarness of Location of Stimuli. Experiment

(a) Place a glass marble on a non-slippery surface, e.g. on the page of an open notebook.

(b) Cross the first and second fingers of one hand and press on the marble with the tips of these fingers.

(c) Close your eyes and roll the marble firmly, forwards and backwards, side to side and then with a circular motion for about 30 seconds.

(d) Notice any unusual impressions you receive from the fingers.

Discussion

1 The subjective impression should be as if there were two marbles with the fingers pressing
between the two.

2 The areas of the finger-tips employed, with the fingers not crossed, would normally be stimulated only by two surfaces separated in space.. The connections that exist between the receptors and the brain are, presumably, the foundation for this interpretation. When the two areas are stimulated simultaneously by the same object in the absence of visual evidence, the brain makes its usual interpretation, giving the sensation of two objects.

The results also show that we normally rely on information from several sources for our
interpretations. If the subject watches the fingers and marble, it is far more difficult to elicit the impression of two objects.

D G Mackean is the author of GCSE Biology, IGCSE Biology, and many other Biology text books. He has a site of Biology Teaching Resources at http://www.biology-resources.com which includes a bank of experiments for teachers, sample PowerPoint presentations, and many biological drawings

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Fascinating Properties of the Golden Ratio

The golden ratio, also known as the golden mean, is a number with some truly amazing properties. This number is equal to 1 plus the square root of 5, all divided by 2. Rounded to 10 decimal places, it is equal to 1.6180339887. The golden ratio has fascinated people throughout history, and as a result, it appears in numerous works of art and architecture. In addition, the ratio occurs in nature as well as in geometry and in connection with the Fibonacci sequence.

The most basic property of the golden ratio is that it is the only positive number which is equal to one more than its reciprocal. It is also equal to one less than its square. The continued fraction coefficients of the golden mean are all equal to 1. Consecutive powers of the golden ratio converge to the Lucas sequence: 1, 3, 4, 7, 11, 18, ..., a sequence closely related to the more well-known Fibonacci sequence: 1, 1, 2, 3, 5, 8, ... . To obtain the next number in either of these sequences, one adds the two previous numbers. The golden ratio is the limit of the ratio of consecutive Fibonacci or Lucas numbers as these numbers get large.

One of the most fascinating constructions involving the golden mean is the golden rectangle, a rectangle whose proportions are equal to this ratio. A golden rectangle may be subdivided into a square and a similar golden rectangle. In fact, this pattern may be continued forever. By connecting the vertices of the resulting rectangles, one obtains a logarithmic spiral, a shape found in nature.

Another geometric construction exhibiting the golden ratio is the pentagram, or five-pointed star. The pentagram contains line segments of four different lengths. The ratio of the lengths of any consecutive pair of such line segments is equal to the golden ratio.

The golden ratio appears in plenty of buildings throughout the ages, including the Great Pyramids of Egypt, the Parthenon, and the United Nations building. It also appears in several works of art. Leonardo da Vinci and Salvador Dali used the golden ratio in some of their artworks.

The golden ratio and Fibonacci numbers also occur in nature. In particular, the seeds and flowers of many plants exhibit structures utilizing the golden ratio. For instance, many sunflowers have spiral patterns of petals with 89 spirals going one way and 55 going the other way. These are both Fibonacci numbers and their ratio is a very good approximation to the golden ratio.

http://www.mathamazement.com

http://mathamazement.com/Lessons/Everyday-Math/05_Miscellaneous/05_03_Important-Numbers/golden-ratio.html

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