Season changes due to the change in the position of the earth around the sun true or false

What are the answers for the following questions?

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.

Countries trade with each other because resources are not evenly distributed across the globe. true or false