The light gray lines in the graph are showing the prediction made, the prediction of the temperature change in that specific habitat. I would have to assume that the length of the line shows both the starting degree and how much the degree changes.
The black lines are showing the specific temperature change that the species can adapt to. The length of the line is showing the range of those temperatures.
I hope this helps! Let me know if you have any questions! Good luck on the rest of your assessment!
Mark this as Brainliest (if i helped of course) if you get a chance:)
