What is a negative aspect of liming? A. It can lower the porosity, creating drier soil.
B. All of these
C. It releases carbon dioxide, which can contribute to global warming.
D. It increases the acidity of the soil.

9. technology can bring both good and bad things. building a vertical farm can increase food supplies in cities (good), but it may cause unemployment in rural areas (bad). give another example of both the good and bad sides of a technological advancement (5 noints)