A large tablet used for writing on with chalk is commonly known as a "chalkboard" or "blackboard." These are typically large, flat surfaces made of a smooth, dark material (traditionally slate, but now often made of materials like wood, laminate, or painted steel) that allows chalk to be used for writing or drawing. Chalkboards are commonly used in classrooms, offices, and other educational or instructional settings for teaching, brainstorming, making presentations, or displaying information. They are also sometimes used in restaurants or cafes as menu boards.
The acidity or basicity are expressed by pH (the negative logarithm of the activity of hydronium ion).
Water is used to put out a fire because, it tends to cut off the oxygen that is feeding the fire and, because it has a high heat of vaporization into steam, it rather rapidly cools the burning pieces. Additionally, usually, it's readily available.
Trains consists mainly of various steel alloys, although sometimes aluminium gets used for body panels. Then there's copper and possibly aluminium for whatever wiring the train has. Brass for the occasional bushing/bearing.
A virus of 50nm would be too small to see unless an electron microscope was used because it has greater resolving power and a resolution up to .1nm. A microscope using compound light as the means of illumination could not resolve better than approx. 200nms.
The amino acids are broken down into a 3 carbon chain, amine group, and their R group, dependant on the specific amino acid. The amine group is acidic and when being filtered from the body, overworks the kidneys. If a person has bad kidneys or other problems, they should not ingest excessive protein. The carbon chain can be stored in the body for future use. The R group, is ued in other body molecules or for assembling new amino acids. Basically, it will be stored as fat!!! So make sure you burn enough calories to avoid this problem.
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Mitochondria
How did incas ued to dress
Pueblo Indians
encyclopedia is used for correct references.
Ued
prevent external rotation of the hip
so that it wont rust.
all the time
all the time
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maha computer ls ued for reasearch