Which of the Following Functions,essential for Life on Earth,is Performed

question 18

Multiple Choice

Which of the following functions,essential for life on earth,is performed by bacteria?

• A)The direct provision of food for yeasts.
• B)The control of insect plagues.
• C)The decomposition of organic material to recycle nutrients.
• D)The production of hormones and growth factors.
• E)All of the above.

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