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How do I describe the leaves of the trees in Taiga?

The leaves of coniferous trees are adapted to the climates found in the taiga. Taigas have mild summers and long, cold winters, making it difficult for trees that drop leaves to regrow them in the spring. For this reason, coniferous trees do not drop leaves, enabling them to conserve energy. Despite the high snowfall generally found in a taiga, the ground remains frozen for long periods, which means that trees cannot absorb the water with their roots. The thin needles found on the trees have a smaller surface area than the leaves on deciduous trees, limiting evaporation of water vapor from the..

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Why do we make alloys?

Steel is a perfect example of an alloy. It is made by infusing iron with carbon. Iron in its original state is strong, but it's also naturally brittle and easily rusts. Steel is instead harder and resists rusting better than iron.\nAn example of an alloy with a special property is nitinol, which is made by mixing nickel and titanium. This mixture creates a material that serves as a memory alloy; if bent it can return to its original shape by either heating it or passing an electric current through it. This property is useful for spectacle frames as it allows for easy repair if bent.\nAllo..

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What is the packaging and distribution center of the cell?

Located near the nucleus, the Golgi apparatus collects proteins and lipids (fats) built in the rough and smooth endoplasmic reticulum. It then modifies, sorts and packages them into vesicles, or sealed droplets. These proteins and lipids are then sent to lysosomes (another type of organelle, or “little organ,” found within the cell). They can also go to the cell’s plasma membrane, or to a third destination somewhere completely outside of the cell.\nMaterials move through the Golgi body in a particular order. First, they pass through the Cis Golgi network to reach the Golgi stack. Here, t..

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What does a lysosome do?

The enzymes in lysosomes break down biological substances, such as proteins, carbohydrates, fats and nucleic acids. These substances can come from an old organelle, a food source or a foreign agent, such as a virus.\nPrimary lysosomes originate in the Golgi apparatus. These lysosomes fuse with phagosomes to become secondary lysosomes. Phagosomes are vesicles that form when a part of a cell's plasma membrane envelops and engulfs a food particle. The digestive enzymes then enter the phagosome from the fusing of the lysosome, thus breaking down the contents of the phagosome.

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What is a pattern in the stars called?

In the Northern Hemisphere, the majority of the constellations were named by the ancient Greeks. The majority of the constellations in the Southern Hemisphere were named by 17th century European explorers.\nThirteen constellations travel on the same path as the sun, moon and planets. These constellations are referred to as the stars of the Zodiac. Astrologers use 12 of the 13 signs to make astrological predictions. The 13 signs of the Zodiac are Capricorn, Aquarius, Pisces, Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Ophiuchus and Sagittarius. Ophiuchus is known as the "13th Sig..

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What are some free electronic circuit schematics for beginners?

Although the schematics at Julian Trubin are primarily for beginners with rare exceptions, Discover Circuits caters to engineers of all levels. However, searching for simple electronic configurations, such as low-power LED light and flasher circuits, reveals lists of circuit schematics suitable for beginners.\nDiscover Circuits divides its category list into multiple pages. A visitor can use the page selectors at the top and the bottom of the list to navigate through the pages. As the schematics are often cross-referenced, some might appear in several circuit categories.

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What was Marconi Guglielmo famous for?

In December 1901, Marconi proved that wireless waves were not affected by the curvature of Earth. He used his patented invention for transmitting the first wireless signals across the Atlantic between Poldhu, Cornwall and St. John's, Newfoundland; the distance covers 2100 miles.\nAs a direct result of his work, Marconi received the 1909 Nobel Prize in physics, along with fellow scientist Karl Ferdinand Braun.

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How many moons does Venus have?

The second planet in the solar system, Venus is at a distance of about 67 million miles away from the sun. Venus is a terrestrial planet and also does not have any rings. Its atmosphere consists mostly of carbon dioxide, nitrogen and sulfuric acid.\nThe environment on Venus also is extremely hot, with temperatures reaching as high as 465 degrees Celsius, or 869 degrees Fahrenheit. Venus has a retrograde rotation and is the only planet in the solar system named after a female deity.

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What is the CNO cycle?

The CNO cycle provides the nuclear reaction that stars use to create light. In the fusion process, the isotopes bond to create the alpha particle, electrons and positrons that interact to produce gamma rays. The stars that undergo carbon fusion do so continuously through a series of four steps or chemical reactions. Stars below 15 million Kelvin undergo hydrogen fusion without a catalyst. The sun undergoes both carbon fusion and hydrogen fusion to create helium.

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What are steep-sided volcanoes made from?

Stratovolcanoes form differently from shield volcanoes, which are lower and wider, because the ejected material is different. A shield volcano ejects lava that oozes slowly downhill. Cinder cones, on the other hand, eject more viscous fluids and more ash, the combination of which can hold a steeper grade. Thus, the cone built up by these volcanoes tends to be much taller.

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