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How to Feed Sand Crabs. Walking along the beach, you may have noticed sand crabs burying themselves in the sand, or you may have even felt one pinch your toes while standing in shallow water. Sand crabs are quite small…
The Earth is roughly spherical in shape, so you can approximately calculate its volume if you know its radius. Modern scientists have sophisticated methods for doing that, but even the ancient Greeks could do it by observing the sun. Within…
White vinegar, or acetic acid, and isopropyl alcohol, or rubbing alcohol, are inexpensive and handy for use around the house. Both can be used for cleaning, and they’re also fairly good disinfectants. Vinegar is edible, but isopropyl alcohol isn’t. Isopropyl…
Besides the number buttons and those for the basic arithmetic operations of addition, subtraction, multiplication and division, a scientific calculator has an array of function buttons. Some of these calculate exponents, square roots and trigonometric functions. Among the function buttons,…
UV stands for ultraviolet light. It is a light invisible to the human eye as it has a shorter wavelength than visible light. UV light for plants is very important as it helps them grow. Horticulturists sometimes supplement the light…
WeighMax manufactures industrial, bathroom, kitchen, postal, pocket and tabletop digital scales. In addition, the company makes calibration accessories for its scales. These calibration accessories are small weights of different mass, such as 50, 100, 200 and 500 grams. WeighMax scales…
An octagon can have two types of diameters. Both diameters result from a regular octagon, in which each side is equal in length and each angle between two intersecting sides measures 135 degrees. One type of diameter measures the perpendicular…
The melting temperature of aluminum foil is 660 degrees Celsius (1,220 degrees Fahrenheit) at standard pressure, so it won’t melt with temperatures encountered in a standard household oven. The physical form of the aluminum, whether powder, blocks, foil or some…
Centipedes have the basic body shape of a worm, but they also have legs and fangs, often with a venomous bite that can be very painful. The name means “hundred legged,” but they generally have only 10 to 30 pairs…
There are several varied types of bodies of water. These waters may be fresh water or salt water and be moving or contained. Often the size of these bodies of water set one apart from the other, as can their…
