Nearly 50% of the land on our planet is currently used for agriculture, with very little more agriculturally usable land available. If everyone on the planet had an ecological footprint the size of the average citizen if the Unites States, then _____.
a) we could support 50% more people on our planet
b) we would have 50% more food to go around
c) we would be able to provide for everyone without much difficulty, using the other 50% of the land currently not being used
d) about 50% of the people would starve
e) we would need at least two more planet Earths to feed and support everyone
