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Thomas Jefferson used to boast to European statesmen of the greater dimensions attained by American animals than their Old World counterparts. Though it’s not strictly accurate, the claim has an element or two of truth: Several mammals also found in…
The square is a geometric shape that needs no introduction. It’s a rectangle, which means that it has four sides and four 90-degree angles, but it’s a special case of this two-dimensional shape. All of its four sides are equal.…
Geckos are lizards in the family Gekkonidae. According to the EMBL reptile database, there are almost 1,200 species of geckos in the world. All geckos are small and communicate by chirping or squeaking. Most are nocturnal and excellent climbers, but…
The law of the conservation of energy states that energy is neither created nor destroyed. Instead, it is simply transferred from one type of energy to another, or from one form of energy to another. The difference between mechanical energy…
Buckeye and horse chestnut trees belong to the soapberry family, named Sapindaceae, genus Aesculus. They are not at all related to true chestnut trees, which are part of the beech family, despite the horse chestnut name and some physical similarities.…
A number can have two inverses. One inverse is the additive inverse, which is the value that when added with the original number will equal zero. To find the additive inverse, just make the original value negative if it’s positive…
Ecological relationships describe the interactions between and among organisms within their environment. These interactions may have positive, negative or neutral effects on either species’ ability to survive and reproduce, or “fitness.” By classifying these effects, ecologists have derived five major…
If someone asks you to give your height, if you live in the United States, you most likely prepare yourself to give two separate but related numbers, such as 5 and 10, without even thinking about it. If you live…
The Great Barrier Reef, located off of Australia’s eastern coast, is the largest coral reef ecosystem in the world. The reef covers an area over 300,000 square kilometers and includes a wide range of ocean depth, and it contains such…
In everyday language, people use the terms heat and temperature interchangeably. In the field of thermodynamics and physics more broadly, though, the two terms have very different meanings. If you’re trying to calculate how much heat is absorbed by something…
