Sorry, I won't understand the question what you asked now.
The railroad tracks are parallel, because they go the same direction and don't intersect
The tropics get more rainfall than on the other places on earth because more evaporation takes place in the tropics.
Answer:
On the surface, the greatest factor affecting Earth is sunlight. Sun provides energy for living organisms, and it drives our planet's weather and climate by creating temperature gradients in the atmosphere and oceans. (got the answer from google hehe)
Explanation:
I think it's climate or humidity