Eduard buchner is considered the first modern biochemist because he proved that are sufficient for alcoholic fermentation in the absence of live yeast - as long as a source of is provided.

enzymes

sugar

Explanation:

German chemist Eduard Buchner won a Chemistry Nobel Prize in 1907 for his findings on fermentation, which has to do with the chemical desintegration of a substantance. Thus, yeast and bacteria are involved in the processes of relieving heat and causing effervescence. In fact, Buchner could demonstrate that yeast cells could ferment sugar.

the answer is a.

explanation:

the clause "looking toward the south" modifies "a funnel cloud." it's not really the cloud that's "looking," but grammatically, that clause is modifying the cloud.

is this the question?