Soil Fertility
by Joseph Darby Condon.

There are many threats to soil fertility.  Some examples are poor irrigation systems and using chemical fertilizers.  Others are over-planting and
over-grassing.  They are all threats.
Soil fertility can be preserved in many ways too.  You can use aqueducts and use natural fertilizers.  You can use crop rotation and stuff like that.
They can all help preserve crops and soil fertility.
It is very important to do these things to preserve soil fertility.  If you have no soil, there are no crops.  If there are no crops, there will be no
wheat for making tortilla chips and there will be no grass.  No grass means no milk from cows.  No milk means no cheese.  That means no cheese which means no nachos.  Preserve the crops - for the nachos!!