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The ozone hole in September, 2003. Even as scientists verified that the rate of ozone depletion was
Alexander Fleming photographed in his lab where he observed the natural competition between a fungus
Jane Goodall first observed Gombe chimpanzees chewing leaves, then dipping the chewed-up “wadge” int
An overhead camshaft engine equipped with variable valve timing on both the intake and exhaust ...
Variable Gases: Water Vapor
Apply knee to chest stretch for posterior hip and leg muscles. Facing the table directly, place one ...