Which of the following is a biofuel produced from plant materials? phosphorus

ethanol

carbomorph

cassava

What first caused people to consider that the continents were once one large landmass?

You have been tasked with sorting the rock samples shown into three categories, with two rocks in each category. what attribute would you use to sort these rocks? which rocks would be in each category? rocks: obsidian, coquina limestone, granite, soapstone,pumice, and gneiss.

Because its government strictly controls its economy, north korea has a economy. a. command b. mixed c. traditional d. free market