are a series of rocky or metallic objects that orbit the Sun, mostly in the main belt between Mars and Jupiter. Some asteroids, however, have orbits beyond Saturn, others are closer to the Sun than Earth. Some have hit our planet. When they enter the atmosphere, light and become meteorites. A asteroids are also called minor planets. The largest is Ceres, with 1,000 km in diameter. Then, Vesta and Pallas, 525. We found 16 that exceed the 240 km, and many small ones. Ida, the photo side, is about 115 km from tip to tip and Gaspra, below, is less than 35. The ships that have sailed through the asteroid belt have shown that it is virtually empty and that the distances between each other are enormous. The asteroid belt formed as a theory, from the destruction of a planet, a small planet. Should 2,500 times together asteroids known to have the mass of Earth. According to another theory, a group of about 50 asteroids were formed with the rest of the Solar System. Afterward, the crashes have been fragmented. Within the belt there are gaps, areas where an asteroid rotates, because of the influence of Jupiter, the closest giant planet.
If Charles Darwin would be turning in his So his theory of evolution today is subjected to trial in Kansas (USA) in a series of Education Committee hearings on the future the teaching of evolution in the state. The hearings, which will last three days have warmed the atmosphere in the state capital, Topeka, where supporters and opponents of a duel open Darwin dispute, which according to the first game is on the divide between science and religion and, as the second, critical thinking. British scientist critics, led by the movement "Intelligent Design" - want textbooks to question Darwinism, especially the idea that man, monkey and other animals have common ancestors. In contrast, followers of Darwin believe that science has nothing to do with a debate after which, they say, lies the growing influence of the religious right in this country. Harris Darwin defends the idea that the mechanisms "adapt and respond to the environment in which they live", but not the principle that "man is an accident." "The idea that different forms of life come from a common ancestor and are the result of a natural, unplanned process is not supported by science," said Harris. Intelligent Design theory was born in Seattle's Discovery Institute, a conservative center opened in 1990 and counts among its founders Bruce Chapman, director of the U.S. census for the administration of President Ronald Reagan (1981 - 1989). Scientists Discovery Institute's claim that neo-Darwinism does not answer such complex mechanisms such as cell structure, which can only be the work of an "intelligent designer." Given the "gaps" that attribute to Darwinism, Intelligent Design proposes that the textbooks do a "critical analysis" of evolution, which "should be presented as a scientific theory open to scrutiny and not as an unquestionable dogma." Although not yet clear how this conflict will be resolved, Darwin has survived similar attacks in the past. Creationists, a group that supports the biblical view that God created the world in six days about 6,000 years ago, have lashed out repeatedly against Darwin. In 1987 the U.S. Supreme Court banned creationism be taught in biology classes, since it is pseudoscientific, and coined the movement as a "religious dogma." Unlike creationists, Intelligent Design says that his theory is agnostic, which gives them a crucial advantage over creationism, the potential to facilitate access to science classes, where they want to derail Darwinism.
osmosis is defined as a passive diffusion characterized by the passage of water, solvent through the semipermeable membrane from a dilute solution to the most concentrated. And we understand by osmotic pressure to that which would be necessary to stop the flow of water through the semipermeable membrane. When considered as semi-permeable to the plasma membrane, cells in multicellular organisms must remain in osmotic equilibrium with tissue fluids that bathe. If the extracellular fluid increases the concentration of solutes, would be hypertonic compared to cells arise as a result of water loss and dehydration (plasmolysis) Also Thus, if the extracellular fluids are diluted are hypotonic compared to the cells. Water tends to move to the protoplasm and cells swell and become swollen and may burst (in the case of plant cell wall cellulose forbid it), by a process of turgor.
are a series of rocky or metallic objects that orbit the Sun, mostly in the main belt between Mars and Jupiter. 
