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The cell is the microscopic building block of most living organisms. Biology students learn about the parts of a cell and how they function, but it can be difficult to imagine how a cell really works. A useful way to…
A product is the result of carrying out the mathematical operation of multiplication. When you multiply numbers together, you get their product. The other basic arithmetic operations are addition, subtraction and division; their results are the sum, the difference, and…
The tundra and taiga represent the two coldest land biomes on the planet, but they have different precipitation levels, and the tundra has permafrost. These two factors cause sharp differences between the plant life of the two biomes, and the…
Although you might think of a machine as complex system of gears, drive belts and and a motor, the definition physicists use is much simpler. A machine is simply a device that does work, and there are only six different…
If you don’t live near the sea and want to do experiments on seawater, you can easily replicate seawater at home. Sometimes, seawater is used in holistic treatments, farming and air conditioning. Seawater is made up of water, salt and…
The most significant factors affecting the life of an AAA battery include the type and quality of the battery, its application and its amount or frequency of use. The environment, especially temperature and humidity, also affect battery life. And rechargeable…
To construct a vector that is perpendicular to another given vector, you can use techniques based on the dot-product and cross-product of vectors. The dot-product of the vectors A = (a1, a2, a3) and B = (b1, b2, b3) is…
Tundra occurs when a region is so cold, the soil never completely thaws — even in the warmest months, only the top few feet of the soil defrost. Because both poles have extreme climates, tundra is found in both the…
Pandas are one of the most easily recognized animals on Earth, thanks to their bold black and white coloration. Since almost all other bears have just one solid coat color, pandas are highly unusual-looking. They are also unique in other…
The deciduous forest is one of the most populated biomes in the world. It covers Europe and Japan, and is found in the eastern parts of the United States, Canada and China. Deciduous forests are characterized by plentiful rainfall, rich…
