Coal can disrupt life and air. Coal is a non reusable resource and it can make life harder. Coal can heat homes and power trains.
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Explanation:
Bonds form when atoms share or transfer valence electrons. In a covalent bond, two atoms share one or more electrons. Water is a polar molecule. A hydrogen bond is a relatively weak bond between two oppositely partially charged sides of two or more molecules.
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Microbes play an incredibly important role in research. Many of the breakthroughs in molecular biology, such as understanding how the genetic code works and how genes are used to make proteins, were made by scientists studying microbes in the laboratory
