Final answer:
Without sufficient context, it's difficult to determine why Carl runs towards the sun every morning, but it may relate to a religious or cultural practice honoring the sun, given its significance in many early cultures.
Step-by-step explanation:
The reason why Carl runs towards the sun every morning in the movie "30 Days of Life on an Indian Reservation" is not clearly provided in the context given. However, considering the cultural and historical significance of the sun in various early cultures, one could argue that Carl's actions might be related to following a religious or cultural practice that is connected to the movements of the sun. Many early cultures celebrated special events like the summer solstice, which involved observing the sun's position to determine the right time for celebrations.
Additionally, based on the context provided, which mentions behavior adjustments and the importance of the sun for warmth and safety in a natural environment, it's possible that Carl's morning run could directly or indirectly be associated with these aspects, such as staying warm or aligning with cultural customs that honor the sun's warming presence.