Which of the following statements is true?

nitrogen is important for plant life, but not for animal life.
oxygen is the most abundant gas in the atmosphere.
iron is an important element in chlorophyll.
carbon readily forms bonds because it only has four electrons in its outermost shell

sadness is not good

explanation:

answer: glucoamylase presented optimum activity at temperature of 55â°c, and, in the glycosidic bonds from the non-reducing ends of starch, resulting in the production of glucose. source and type of fermentation can affect the enzyme's properties

credit to kalahira