3 ms·
I’m not sure that’s correct, or at least is not complete. There were many cycles of grasses and wildlife involved in building up the soil.
by dv_dt 5y ago
I’m not sure that’s correct, or at least is not complete. There were many cycles of grasses and wildlife involved in building up the soil.
- eatmyshorts 5y agoNo, it's correct. The plains states are so fertile because of hundreds of millions of years of shallow ocean water led to huge amounts of plankton to die and settle. That's also why there's oil in Texas, Oklahoma, and Kansas.