One student claims that yogurt is made by lactic acid fermentation. another claimer claims that yogurt is made by alcoholic fermentation. testing for which of the following substances could determine whether alcoholic fermentation or lactic acid fermentation was going on?
a) nad+
b) pyruvate
c) oxygen
d) carbon dioxide

Fruit bats in central america eat bananas and other fruits. banana plants rely on bats for pollination. what would be the most likely consequence on the banana crop if fruit bats were eliminated from the area? the banana crop would increase because bats would stop eating the crops. the banana crop would decrease because bats would no longer pollinate the crops. the banana crop would remain constant because bees would replace the bats. the banana crop would remain constant because the plants would adapt using asexual reproduction.