Question 20 (4 points)
(01.02 MC)
What is the main reason we cannot depend on the desert ecosystem for food production? (4 points)
O a
Ob
Oc
Od
The desert ecosystem has too many animals to support.
The desert ecosystem has poor, sandy soil and little water.
The desert ecosystem is not large enough for food production.
The desert ecosystem has too scarce a population to have farms.