The designation of magnesium ion as Mg2+ indicates:
A. an atom that has lost two electrons and is negatively charged.
B. an atom that has two more neutrons than protons.
C. an atom that has lost two electrons and is positively charged.
D. an atom that has gained two protons and is positively charged.
E. an atom that has gained two protons and is negatively charged.
Answer: C
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You and your friends are hiking the Appalachian trail in North Carolina. You run out of water and your friends want to fill up from a beautiful clear stream in the middle of the forest. What precautions should you take before drinking the water and why?
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Which organism is most likely to have a type III survivorship curve?
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Which of the following statements is true about the phylogenetic tree shown here?
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The duration of pregnancy normally is ______ weeks.
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