Complex societies together with the Maya and Aztecs used swidden agriculture to some extent, however tricky irrigation structures and tropical environment management strategies had been necessary to guide their dense populations.
In Peru, the Inca constructed terraced fields on the steep Andean slopes.
Given its temperate weather and sizeable land location, agricultural manufacturing is in general based totally on the manufacturing of row plants.
The soybean complicated is the maximum essential crop, representing fifty two% of universal agricultural exports.
Indigenous Americans practiced agroforestry, or the control of trees, crops, and animals together in a manner that blessed all 3.
Silviculture, the control of tree increase and forest composition, changed into practiced in the prehistoric Japanese Woodlands and to foster natural world populations and enhance looks.
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Material that is thrown out by a volcano , including Pyroclastic material ( Tephra ) and lava bombs. Eruptionsearch for term. The process by which solid, liquid, and gaseous materials are ejected into the earth's atmosphere and onto the earth's surface by volcanic activity.
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Answer:a precise and unambiguous description of the meaning of a mathematical term. It characterizes the meaning of a word by giving all the properties and only those properties that must be true.
Theorem — a mathematical statement that is proved using rigorous mathematical reasoning. In a mathematical paper, the term theorem is often reserved for the most important results.
Lemma — a minor result whose sole purpose is to help in proving a theorem. It is a stepping stone on the path to proving a theorem. Very occasionally lemmas can take on a life of their own (Zorn’s lemma, Urysohn’s lemma, Burnside’s lemma, Sperner’s lemma).
Corollary — a result in which the (usually short) proof relies heavily on a given theorem (we often say that “this is a corollary of Theorem A”).
Proposition — a proved and often interesting result, but generally less important than a theorem.
Conjecture — a statement that is unproved, but is believed to be true (Collatz conjecture, Goldbach conjecture, twin prime conjecture).
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Crocodiles have been hunted for their oil, skin, claws, meat, medical and religious purposes. ... Crocodiles have been farmed since the early 20th century, because crocodile farming may be a very lucrative business. Crocodiles are carnivores, they have a slow metabolism which allows them to go months without food.
