Q1. Atoms can be represented by simply listing the number of protons, neutrons, and electrons-for example, 2 p+; 2 n0; 2 e- for helium. Which atom represents the 18O isotope of oxygen?

Q2. What do these error messages and warning tell you about how closely Virtual Unknown Microbiology mimics nature in demonstrating the ubiquity of microbes?

Q3. A misconception is that we must drink 8-10 glasses of water per day. What is an appropriate amount of water that has to be drunk per day? Explain the reasoning.