The graph below shows population data for two species.


What can be said about the relationship between species 1 and species 2?
A.
The population of species 1 is not influenced by the population of species 2.
B.
The populations of species 1 and species 2 stay the same over the time period shown.
C.
When the population of species 1 increases, the population of species 2 decreases.
D.
When the population of species 1 increases, the population of species 2 increases.