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Liters and kilograms are both important units of measure in the metric system and represent fundamental quantities in the SI (International System) units scheme. A liter is a unit of volume, or space. A kilogram is a unit of mass,…
An ecosystem is comprised of all the non-living elements and living species in a specific local environment. Components of most ecosystems include water, air, sunlight, soil, plants, microorganisms, insects and animals. Ecosystems may be terrestrial – that is, on land…
Since the establishment of the metric system in 1790s, the centimeter, meter and other metric units have served as the standard units to measure distance throughout most of the world. The U.S. is the only major country that still uses…
In math, the associative and commutative properties are laws applied to addition and multiplication that always exist. The associative property states that you can re-group numbers and you will get the same answer, and the commutative property states that you…
Abiotic factors are those that are not living but which still have an impact on the ecosystem and the living elements of that system. A change in the abiotic factors of the ecosystem can have a profound influence on the…
There are many different types of moths among the more than 160,000 species worldwide. A lot of moths are nocturnal, meaning they are active at night. However, diurnal moths are active during the day and crepuscular moths are most active…
The word omnivore denotes an animal that eats both plants and animals, including insects. The tropical rain forest is filled with all kinds of animals and plants, and many of the inhabitants of the tropical forests will stalk and eat…
When time is important – like planning for a science fair project – picking seeds that germinate quickly can be a key to success. Radishes push up through soil quickly, as do melon and squash plants. For flowers, choose zinnias…
Burning Styrofoam, or polystyrene, is the least appropriate way to get rid of it for both people and the environment. Research has shown that when Styrofoam is burned it releases toxic chemicals and smoke that can damage the nervous system…
Learning to deal with exponents forms an integral part of any math education, but thankfully the rules for multiplying and dividing them match the rules for non-fractional exponents. The first step to understanding how to deal with fractional exponents is…
