Water will travel underground through layers of rocks and soil which are impermeable materials. select the best answer from the choices provided t f

The impact of a large asteroid comet with earth has been proposed to have caused the extinction of the dinosaurs. the impact site of this comet is in or near

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals

The next best alternative given up when making a choice is called the a. opportunity cost b. comparative advantage c. primary objective d. negative consequence select the best answer from the choices provided. a b c d