Why is trade necessary? explain with example.

I think it's necessary because people acquire the needs that they you don't have like for example your friend has a banana and you have a mango your friend wants that mango and you want that banana so you will trade each of your goods to each other and you will acquirewhat you wanted

according to hess's theory, when the magma cooled, it would expand and push the tectonic plates apart. it would push the north and south america plates to the west and eurasia and africa ones to the east. the atlantic ocean would get wider but the coastlines of the masses would stay the same.

harry hammond hess was a geologist and a united states navy officer in the second world war. he is considered to be one of the founding fathers of the theory of plate tectonics. he is known for his theories on sea floor spreading, stating that the movement of the continents was the result of see floor spreading. the continents are attached to the plates and do not move separately. the plates themselves shift and change shape, carrying the continents along.

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services