Which south american country is the largest consumer of plant-based bio fuels in the world a. venezuela b. colombia c. brazil d. uruguay

Gold is not now being extracted from seawater. why not? a. it would be too disruptive to marine life to develop any marine mineral resources b. there is no gold in seawater c. we don't know how to extract minerals from seawater d. it would be too costly and difficult to separate the small amount of gold from the very large amounts of halite and other minerals

To be eligible for naturalization, an immigrant must be able to speak, read, write, and understand: a) his name b) poetry c) the constitution d) the english language

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?