Which of the Following Is True of the Tall Grass $2 \mathrm{~m}$

Multiple Choice

Which of the following is true of the tall grass prairies in North America,that once rose to heights of $2 \mathrm{~m}$ ?.

A) they extended between 15° and 30° north latitude.
B) they are now the "world's breadbasket".
C) they were easily farmed by early settlers.
D) they still cover large tracts of the prairies to this day.
E) they have been taken over by invasive tree species.