La Evolución Biológica La Evolución Biológica En 1543 (y no se impacienten con la fecha), Nicolás Copérnico publicó "De revolutionibus orbium caelestium", libro en el que propuso un nuevo y revolucionario sistema del mundo sobre la base de una Tierra en movimiento. En 1859, más de tres siglos más tarde, otro hombre revolucionario publicó "Sobre el origen de las Especies", en donde también se vertían nuevas y radicales ideas sobre la naturaleza de la vida. El título de esta página no es más que una alusión (espero que no presuntuosa) a esta semejanza, porque si bien separados por varios siglos, ambos personajes fueron prácticamente tratados de herejes y ambos han sido los artífices de sendas revoluciones científicas y del pensamiento humano. El primer genoma eucariota secuenciado fue el de la levadura de la cerveza Saccharomyces cerevisiae, un eucariota unicelular, en 1997. Sigo con mi ambición inicial: divulgar lo que constituye una de las ramas más apasionantes de la Ciencia.
Water is dangerous This was found on the newsgroup: rec.humor.funny A student at Eagle Rock Junior High won first prize at the Greater Idaho Falls Science Fair, April 26. He was attempting to show how conditioned we have become to alarmists practicing junk science and spreading fear of everything in our environment. In his project he urged people to sign a petition demanding strict control or total elimination of the chemical "dihydrogen monoxide." And for plenty of good reasons, since: it can cause excessive sweating and vomiting it is a major component in acid rain it can cause severe burns in its gaseous state accidental inhalation can kill you it contributes to erosion it decreases effectiveness of automobile brakes it has been found in tumors of terminal cancer patients He asked 50 people if they supported a ban of the chemical. He feels the conclusion is obvious.
Ciencia explicada Math Help An Engineers Quick References to Mathematics Algebra Help Math SheetThis algebra reference sheet contains the following algebraic operations addition, subtraction, multiplication, and division. It also contains associative, commutative, and distributive properties. There are example of arithmetic operations as well as properties of exponents, radicals, inequalities, absolute values, complex numbers, logarithms, and polynomials. This sheet also contains many common factoring examples. There is a description of the quadratic equation as well as step by step instruction to complete the square.Download PDFDownload Image Geometry Math SheetThis geometry help reference sheet contains the circumference and area formulas for the following shapes: square, rectangle, circle, triangle, parallelogram, and trapezoid.
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