Two sides of it will never meet they will just go on forever hope that helps
I find that the best answer is the following one:
c. determined by factors outside our control
For example, even though life is very hard in the very hot and the very cold regions, we can't control it: so this is an example of a physical environment that is hard to control.
In comparison, it is often easier to describe than our social environment.
Here is the answer that would best complete the given statement above. <span>Even though the great rift valley encompasses lakes, volcanoes, and deep valleys, it is east Africa's HIGHEST area in the east. The answer would be the first option. Hope this is the answer that you are looking for. Have a great day!</span>