Overview: What Are Organic Compounds? All organic compounds contain carbon. This is because of the atomic structure of carbon such that it can bind with up to four other elements at…
read moreOverview Mixtures and compounds are important combinations of elements. They are essential to the chemical processes that support living things, as well as those that occur every day in nonliving…
read moreOverview: The Microscope The microscope is a valuable tool in biology and other sciences. It allows investigators to study many objects that are too small to be seen with eyes…
read moreOverview: Scientific Belief in Spontaneous Generation Great thinkers in ancient times thought that life arose spontaneously in areas where there wasn’t anything living that they could observe. For example, Aristotle…
read moreOverview: The Beginnings of The Universe The astrophysical theory of how the universe began has been nicknamed “The Big Bang.” All matter was compressed into a incredibly dense, superheated mass…
read moreOverview: How Stars Are Made Astronomers and physicists have theorized that stellar formation happens when clouds of gas and interstellar dust collapse, molecules of hydrogen attract one another, and nuclear…
read moreOverview: Genetic Variation and Eye Color Eye color is determined by a number of genes that control the amount of pigmentation in the iris. There are no blue or green…
read moreOverview: What Is Glass? Glass is a peculiar state of matter with some of the properties of a solid and some of a liquid. The scientific definition of “glass” refers to…
read moreOverview: A Frozen Desert The continent of Antarctica contains the South Pole, and is the coldest place on Earth. Scientists from around the world have research bases and conduct experiments…
read moreOverview: Chaotic Patterns Aren’t Random, Just Nonlinear Chaos theory is a system of mathematical modeling used for a number of systems found in mathematics, physics, biology, the social sciences, art,…
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