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Questions and Answers
Which of the following nitrogenous bases is found in DNA?
Which of the following nitrogenous bases is found in DNA?
- Adenine (A) (correct)
- Thymine (T)
- Guanine (G)
- Cytosine (C)
Which of the following elements are contained in all atoms?
Which of the following elements are contained in all atoms?
- Carbon and nitrogen
- Hydrogen and oxygen
- Oxygen and nitrogen
- Carbon and hydrogen (correct)
Which type of crust has more silicon and potassium, but less iron, magnesium, and calcium?
Which type of crust has more silicon and potassium, but less iron, magnesium, and calcium?
- Continental crust (correct)
- Both continental and oceanic crust
- Oceanic crust
- Neither continental nor oceanic crust
What percentage of the Earth's surface is covered with water?
What percentage of the Earth's surface is covered with water?
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At what temperature does the absorbed energy warm the surface of the Earth to, resulting in radiated infrared heat?
At what temperature does the absorbed energy warm the surface of the Earth to, resulting in radiated infrared heat?
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