The soil was also amended with a mystery fertilizer, and analysis showed that th

Question

The soil was also amended with a mystery fertilizer, and analysis showed that the soil had high levels of heavy metals. When President Camacho tweeted this a 3:30 AM, he gloated that his administration had “turned into music. And we used the best metals. Our metals will make the crops great again!”

9. What could be the source of heavy metals in soil?

10. Analysis of the soil and crops found higher than normal levels of Cd, Cr, and Cu. All three can have chronic effects on human health. President Camacho seems happy with the results “Do you mean that when they eat the crops, the people feel as if they smoked chronic?” Explain to President Camacho what “chronic” means in this context.

11. Some in President Camacho’s administration think they should asses the risk associated with high levels of heavy metals in soil. What factors should they consider in their analysis?

12. The pH of the soil contaminated with heavy metals is around 4. A guy at the US EPA suggests adding lime (calcium carbonate) to increase the amount of heavy metals adsorbed to the soil and lower availability to plants. Is this a good idea?

Explanation / Answer

9) The following could be the source of heavy metals in soil.

10) Here the term chronic means long term.

It means the heavy metals will have long term impact on human health.

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