"Here is the transcript of a lecture video.\n\nTranscript:\nAnd why don't all bodies stay in this condition? The answers to these questions live six feet underground. It may not appear very lively down here, but a single teaspoon of soil contains more organisms than there are human beings on the planet. From bacteria and algae to fungi and protozoa, soils are home to one quarter of Earth\u2019s biodiversity. And perhaps the soil\u2019s most important inhabitants are microbes, organisms no larger than several hundred nanometers that decompose all the planet\u2019s dead and dying organic material. Imagine we drop an apple in the forest. As soon as it contacts the soil, worms and other invertebrates begin breaking it down into smaller parts; absorbing nutrients from what they consume and excreting the rest. This first stage of decomposition sets the scene for microbes. The specific microbes present depend on the environment. For example, in grasslands and farm fields there tend to be more bacteria, which excel at breaking down grass and leaves. But in this temperate forest there are more fungi, capable of breaking down complex woody materials. Looking to harvest more food from the apple\u2019s remains, these microbes release enzymes that trigger a chemical reaction called oxidation.\nCreate a multiple-choice question based on the transcript, where the correct answer is \"C) 25\"\n Provide exactly two different responses that are separated with 6 asterisk symbols: ******.
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