Biosolids, a byproduct of sewage sludge, are nutrient-rich materials used to fertilize crops. Despite boosting yields, the often pungent-smelling sludge may contain toxic metals and pathogens. Should it still be used?
a. Yes; this practice conserves landfill space and is an efficient use of resources.
b. Yes, but only if the biosolids are tested prior to application.
c. No; biosolids create an unnecessary risk when synthetic fertilizers that are safe can be used instead.
d. I’m not sure. I would need more information before making a decision.
A, B, C, D
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The overall impact of farm subsidies on a worldwide scale is to increase food surpluses in the rich countries and to discourage food production in the poor countries
Indicate whether the statement is true or false.
The cold feeling that you experience after leaving a swimming pool on a hot, dry, summer day
represents heat transport by: a. conduction. b. convection. c. radiation. d. latent heat.
What is a fault?
a. Fracture/crack along which movement has occurred b. A trace line where water can move c. A space where energy can be stored d. None of the above
What is mineral stability? How does mineral stability change with temperature and pressure?
What will be an ideal response?