Dinosaur Extinction: Currents Theories and Explanations Mass extinctions of plants and animals have occurred many times in the history of the earth, one of the most widely known being that of the dinosaur over 65 million years ago. Many theories as to why the dinosaurs became extinct exist, including volcanic eruptions, changes in climate, diseases, radiation form a nearby supernova, and giant meteor and/or comet impacts. Although loyal believers back all

Contrary to what one would expect if the extinction were gradual, the existing history of fossil records indicates that dinosaur were doing quite well up and that there were no factors threatening their extinction but that suddenly there is a complete loss of fossil history; a sudden extinction? The collision theory is likely the most popular of the available approaches but there are several others including one that involves the

This occurred in 330 BC, and Zoroaster's date would then be 588 BC, and this date we may take to refer to the initial success of his prophetic mission which consisted in the conversion of King Visht-spa when Zoroaster was forty years old. Since he is traditionally said to have lived seventy-seven years, we will not be far wrong in dating him at 628-551 BC. It seems also to

Furthermore, he argues, a technological culture is not an inevitable feature of human evolution. If other cultures had achieved ascendancy, then science and technology would not have emerged as a reference point for measuring intelligence. SETI's requirement for an almost identical technology, although scientifically understandable, is based on an impoverished concept of intelligence. According to Munevar, the development of a scientific culture, with access to radio communication, is highly contingent,

Evolution "Creational critics often charge that evolution cannot be tested, and therefore cannot be viewed as properly scientific subject at all. This claim is rhetorical nonsense" (Stephen Jay Gould). Human life is both sacred and mysterious. From time before recorded history, human beings, both scientific and religious have tried to determine what it is exactly that gives life and by extension, can take life away. In ancient times, most people believed that

Laptop Implementation Program - Action Plan Ideal Classroom The ideal school in the modern era of global education evokes dynamic and progressive thought to what exactly enables a student population to excel and succeed in life's endeavors. Truly, this is central to any discussion regarding educational reformation via school and classroom development. The critical component to these decisions is inherent to the leadership at the school to understand that, according to Cause