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Root vegetables like carrots and beets, and tubers — potatoes — grow underground. The root stores energy for the plant, which translates into energy for people when eaten. Food grown underground is typically rich in carbohydrates, the energy cells of…
The Celsius (or centigrade) temperature scale is the most widely used around the world, although the Fahrenheit scale is more popular in the United States. The Celsius system was invented by Swedish astronomer Anders Celsius in 1742. It is based…
Gallons and cubic feet measure volume, while minutes and seconds measure time. When you measure units of volume per unit of time, you get flow rates such as cubic feet per second or gallons per minute. When converting between flow…
Moon phases represent the names given to points in its orbit around Earth. Each phase lasts for only an instant as the moon constantly moves. To the naked eye, the full moon lasts about three days, but in reality, it…
You can see prisms in both math class and throughout your everyday life. A brick is a rectangular prism. A carton of orange juice is a type of prism. A tissue box is a rectangular prism. Barns are a type…
An element is a substance completely made up of one atom. Thus, the periodic table of elements is effectively a list of all known types of atoms. However, the atom itself is not the smallest known particle, but instead each…
You probably know that magnets don’t stick to nonmetal materials such as wood, plastic, glass, cotton and wool, but you may not know that magnets don’t stick to all metals. In fact, most metals are not magnetic. TL;DR (Too Long;…
Selective breeding can develop desirable traits in plants and animals, but there can be negative effects as well. Without selective breeding, many domestic animals would not exist and many plants that we rely on for food would not be as…
Quantifying the level of uncertainty in your measurements is a crucial part of science. No measurement can be perfect, and understanding the limitations on the precision in your measurements helps to ensure that you don’t draw unwarranted conclusions on the…
The sun is the ultimate source of light and heat for planet Earth and sets in motion very large and complex systems that develop and sustain life. One such land-based ecosystem is the forest, supporting a biodiverse set of plants,…
