A sustained electric current can be achieved with a
A. generator.
B. battery.
C. both
D. none of the above
Answer: C
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Why might disposing of a lead-acid battery, nickel-cadmium battery or mercury battery in a landfill be a bad thing?
A) Cadmium, mercury, and lead are all toxic metals and could leak out of the landfill. B) Cadmium, mercury, and lead are all very reactive and generate highly unstable compounds. C) Cadmium, mercury, and lead are all radioactive and release radiation. D) all of the above E) none of the above
Oxidation and hydrolysis can chemically alter parent material.
Answer the following statement true (T) or false (F)
How did plants and algae acquire their ability to photosynthesize?
What will be an ideal response?
We would expect that soil leaching would be most severe in regions where
A) there is little rainfall and no irrigation of crops. B) irrigation is applied to fields on hillsides. C) mollisols are abundant and farmers rarely plow. D) cattle are grazed and natural grasses cover the land.