Answer:
Expert Verified
Explanation:
It could be argued that the economic relationship between Europe and its nonrenewable resources is that this led to expansion and colonization of other territories--especially in the Americas and Africa--which allowed them to obtain more resources.
Its spread mainly because of the pest rats and also fleas
The subtropical jet streams formate from cool and warm air masses that meet near the equator (close to the 30* Latitude).
They can be replaced naturally.
