The simple graph shows the relationship between available resources and population size.
What evidence does the graph provide?
A.
An increase in the amount of available resources causes a decrease in population size.
B.
A decrease in the amount of available resources causes a decrease in population size.
C.
An increase in the population size causes an increase in the amount of available resources.
D.
A decrease in the population size causes a decrease in the amount of available resources.