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What are the small, finger-like projections in the small intestine called?

The small intestine is about 20 feet long and has a diameter of approximately 1 inch. A major function of this organ is to absorb nutrients from ingested food. Surface enzymes present on the villi aid in the digestion of food. Because of the increased surface area provided by the villi, their thin walls and their proximity to blood vessels, they facilitate quick, efficient nutrient absorption and distribution. Another function of the villi is to help move food through the small intestines.

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How can I decrease forehead size?

Consult a reputable cosmetic surgeonAsk your family doctor for a recommendation to a cosmetic surgeon. This method allows you to avoid less reputable cosmetic surgeons in your area.Make sure surgery is the best option for youConsult with your cosmetic surgeon to ensure surgery is the correct option for you. Even the most advanced procedures can only lower a hairline about 2 inches. Scarring is common and may require the application of permanent makeup to conceal. Some people, like those with thinning hair, are poor candidates. Make sure you are comfortable with the potential risks and results...

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What are the advantages and disadvantages of solar energy?

Some advantages of solar energy include: There is no production of noise when solar cells extract solar energy from the sun. On the other hand, machines, such as generators, produce a lot of noise when producing power. There is absolutely no pollution created by solar energy. However, when oil is burnt to produce energy, harmful greenhouse gases, carbon dioxide and carcinogens are produced. It is cheaper to use solar energy in the long run because the maintenance cost of solar panels is very low compared to the other types of energy production equipment that have moving parts that lead to hig..

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Where is the moon located?

Even though the moon is so far from the Earth, it is close enough to be the largest object in the night sky. In addition, its gravitational pull affects the Earth's tides. Some scientists believe that the moon's gravitational pull is responsible for the Earth's slight tilt, which allows the Earth to maintain a fairly stable climate. The moon takes 27.3 days to orbit the Earth and to rotate on its own axis, meaning that it always presents the same side to the Earth.

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Do all plant cells contain chloroplasts?

Chloroplasts are what help the plant to capture energy from the sun to be converted into food, along with chlorophyll. The process by which a plant does this is called photosynthesis. During photosynthesis, the plant will convert the energy from sunlight into sugars that are used as food by the plant. Because of this special organelle, plants are the only organisms in the whole world that are able to make their own food. No animals contain chloroplasts in their cells. For this reason, they have somewhat of an advantage over animals when it comes to survival.\n\nNot all of the cells in a plant ..

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Who discovered the element mercury?

Mercury is not found free in nature and is primarily derived from the mineral cinnabar. Nearly half of all mercury is produced by Spain and Italy. More commonly known as quicksilver, it is the only metallic element that is liquid at room temperature (standard conditions for temperature and pressure). Bromine is the only other element that shares this characteristic, although there are metals that melt at just above room temperature.

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Which countries have summer in December?

For those people who are looking to travel and vacation in these places, there are several options. The Americas are a great choice for a summer in December, as well as The Caribbean. Some of the most popular destinations for summer in December include: Cartagena, Colombia; Mexico City, Mexico; San Jose, Costa Rica; Lima, Peru; Buenos Aires, Argentina; Queensland, Australia; and Rio de Janeiro, Brazil.\nIn some locations, there are rainy seasons that often coincide with summer seasons. To avoid these when traveling, research the country's average climate, before planning a trip.

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What is a lazy colon?

A lazy colon means that the colon does not contract properly and that it retains stool. A doctor diagnoses a lazy colon with a colon transit study. A lazy colon may be treated with a medication that stimulates the colon. If the colon cannot be stimulated pharmacologically, the best option may be ileorectal anastomosis surgery. Intractable constipation caused by a lazy colon may require a total abdominal colectomy for treatment.

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What types of atoms tend to form metallic bonds?

Metallic bonds are defined as those in which metals share valence electrons. For example, when sodium metallically bonds with itself, each atom is sharing the electrons in the third orbital with up to eight other atoms. The same thing happens when magnesium or other metals metallically bond to themselves.\nThis type of bond is strong and holds the atoms together securely. This causes metals to have very high melting temperatures and very high boiling temperatures. When a metal melts, the individual atoms lose their strict organization pattern, but the atoms remain bonded together. By contrast,..

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When did the Human Genome Project start?

The scientists who proposed the Human Genome Project were interested in the genetic basis of cancer and in DNA damage caused by the atom bombs dropped on Japan. The Human Genome Project was ended in April 2003 after successfully mapping the entire human genome. It revealed there are likely around 20,500 human genes, which was fewer than previously expected. The very first gene mapping was done in 1911 by Alfred Sturtevant working with Drosophila melanogaster, or the fruit fly.

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