Answer:
Under these conditions an increase in the mutation rate evolves, which allows faster adaptation to the spatial variation in local temperature, causing a faster range expansion across the spatial gradient.
Global warming affects the spread of animals because different areas will become suitable for different species, so they spread out. This can cause diseases to spread, as the animals may bring them with them. This can also happen in the opposite direction, where the climate change causes less habitats to be suitable for animals, so they become more sparse
The kilometer is the independent, since it stays the same, and the increasing his exercise time is the dependent since that’s what’s changing
