Sophie had been fairly quiet with the second question, simply because everyone else had shared their answers right away. She of course knew the difference between compost and fertilizer. But she didn't want to not say anything, Sophie raised her hand.

"Fertilizer adds to the soil's nutrient supply, but instead of feeding the soil food web, the ingredients in fertilizers are intended to meet the needs of fast-growing plants." She spoke softly, then went back to staring at the piles of stuff they were most likely about to compost. That definitely explained the smell.