How is the snake population changing every two years?
The graph shows a grid from 0 to 7 on the x-axis and 0 to 200 on the y-axis.
![How is the snake population changing every two years The graph shows a grid from 0 to 7 on the xaxis and 0 to 200 on the yaxis class=](https://us-static.z-dn.net/files/d7b/78c72a25e8ac3be1d746077a00b61623.png)