Changes in what can cause extreme shortages of food?
pH of soil Dehydration climate colder weather global warming salinity Time and energy Winter
A B C D E F G H
Famines are extreme shortages of food that cause people to die of starvation.
Changes in pH of soil can cause extreme shortages of food.
Changes in what can cause extreme shortages of food? (A) pH of soil (B) Dehydration (C) climate (D) colder weather (E) global warming (F) salinity (G) Time and energy (H) Winter