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Two questions, answer both
Importance of water and carbon
Water and carbon are major components of all life. Describe the characteristics of these materials which make them so important to living things. Be prepared to discuss how life as we know it might be affected by slight changes in the characteristics of water or carbon.
Prokaryotic versus eukaryotic and success
Prokaryotic and eukaryotic are the two major categories of cells making up life on earth. Describe the differences in prokaryotic and eukaryotic cells. How have the characteristics of each kind of cell put limitations and provided opportunities for the survival and divergence of modern living things? Be prepared to discuss why both types of cells could be considered equally successful as life has evolved over time.