One student group varied the pH of the yeast mixture. Their results can be seen here. Based on their data, the most desirable pH for fermentation is

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

Which direction does the energy flow in this energy pyramid ?

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).