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).
Explanation:
The answer is B. Russia's fertile soil is extremely depleted from constant use.
Answer:
The Answer is Tornadoes
Explanation:
Tornadoes are the ones caused by severe thunderstorms, most of which fall into a category called supercells.
Magnesium<span> is a metal at </span>room temperature all metals except for mercury aresolids and f<span>ew metals have fairly low melting points for example Gallium. </span>
