<span>Copernicus completely changed people's minds in the way they perceived the world and the planet in general. He shifted away Ptolemaic model of the heavens, and developed his own theory of the heliocentric model in which the Sun is placed at the center of the Solar System. As well as this person, most of the talented scientists of renaissance brought into people's life something new and, in some measure to those who was not prepared for big changes, shocking things.</span>
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In the study of history as an academic discipline, a primary source is an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time under study. It serves as an original source of information about the topic.
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Answer: The five characteristics of classical civilizations are:the ability to adapt and change; patriarchal nature of the families; economy changed from agrarian to complex; lasting marks on art, architecture, literature, language, and science; and complex trade systems.
Answer:
Biosafety level 3 requires at least two-door separation between the area where biohazards are used and the personnel not associated with the research, requires inward inflow into the lab and must have a visual mechanism to verify that air is flowing in the appropriate direction
Explanation:
Biosafety level 3 is required for clinical, diagnostic, teaching, researching or production laboratories working with microbes that are also following BSL-1 and BSL-2 but as these pathogenic agent can lead to life-threatening disease by inhaling it, besides other contaiment precautions, the BSL-3 facilities must have a separated entrance to laboratory door with unrestricted traffic flow and the lab must be behind two sets of self-closing doors and windows must be sealed, with a ventilation system properly directioned installed.
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She built up the Egyptian economy, establishing trade with many Arab nations. She was a popular ruler among the people of Egypt both because she embraced the Egyptian culture and because the country was prosperous during her rule. In 44 BC, Julius Caesar was assassinated and Cleopatra returned to Egypt.
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