The Importance of Water in Supporting Life
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Questions and Answers

What substance is mentioned as the molecule that supports all life on Earth?

  • Oxygen
  • Nitrogen
  • Water (correct)
  • Carbon dioxide
  • What percentage of Earth's surface is covered by water?

  • 50%
  • 70%
  • 75% (correct)
  • 60%
  • In what forms does water exist on Earth?

  • Solid and gas only
  • Liquid only
  • Solid only
  • Solid, liquid, and gas (correct)
  • What is the rare property emerging from the chemistry of the water molecule?

    <p>The solid form floats on the liquid form</p> Signup and view all the answers

    How are Arctic sea ice and glaciers being affected by climate change?

    <p>They are melting</p> Signup and view all the answers

    What is resulting in blooms of phytoplankton in the Arctic?

    <p>Warmer waters and smaller ice pack</p> Signup and view all the answers

    How is the warming climate affecting the population of black guillemots in Alaska?

    <p>Causing a decline in population</p> Signup and view all the answers

    What are most organisms familiar to us made mostly of?

    <p>Water</p> Signup and view all the answers

    What is the only common substance on Earth to exist in all three physical states of matter?

    <p>$H_2O$ (Water)</p> Signup and view all the answers

    What is the solid form of water called?

    <p>Ice</p> Signup and view all the answers

    What is the result of the polar covalent bonds in water molecules?

    <p>Formation of hydrogen bonds between water molecules</p> Signup and view all the answers

    How are the black guillemots in Alaska being affected by the warming climate and reduction of Arctic sea ice?

    <p>Their population is declining</p> Signup and view all the answers

    What is the main reason for the decline in the population of black guillemots in Alaska?

    <p>Decrease in the size of the ice pack</p> Signup and view all the answers

    What type of bonds are formed between water molecules when in its liquid form?

    <p>Hydrogen bonds</p> Signup and view all the answers

    What is the reason behind water's unique emergent properties that make Earth suitable for life?

    <p>The polar covalent bonds and hydrogen bonding between water molecules</p> Signup and view all the answers

    What is the primary reason that life on Earth depends on the chemistry of water?

    <p>The emergent properties of water contributing to Earth's suitability for life</p> Signup and view all the answers

    Why is the polar covalent bond in water molecules important for life on Earth?

    <p>It results in hydrogen bonding, which is crucial for various biological processes</p> Signup and view all the answers

    What makes water the only common substance on Earth to exist in all three physical states of matter?

    <p>The ability of water to change its state based on temperature and pressure</p> Signup and view all the answers

    How has climate change affected the ratio of ice to liquid water on Earth?

    <p>It has caused a decrease in the amount of ice relative to liquid water</p> Signup and view all the answers

    Which aspect of water's chemistry is crucial for its role in making life possible as we know it on Earth?

    <p>The emergent properties contributing to Earth's suitability for life</p> Signup and view all the answers

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