The answer is C. The use and delivery of resources depend on land use
6 because you would take 3/4 / 1/8 and then continue to follow the reciprocal to get 24/4 which is 6.
The Proterozoic division of the geological time scale is an era of the Phanerozoic eon. The Proterozoic division began 2.5 billion years ago and ended 542.0 million years ago.
