I think it’s C, hope it helps !!!!!
The greenhouse gases<span> absorb some of this energy and radiate much of it back towards the surface whilst the rest is radiated out to space. This plays an </span>important<span>role in keeping the </span>Earth's<span> surface warm and able to sustain </span>life<span>.</span>
A good example of a centripetal force in political geography is: A powerful external threat.
Political geography can be defined as a subfield in geography that is focused on the study of boundaries, human government, divisions, and possessions of a nation, as well as outcomes of political processes in its states.
In Political geography, a centripetal force refers to the attitude that unifies the people living within a nation and it keep the nation together by stabilizing and strengthening it.
Basically, two good examples of a centripetal force in political geography are:
- A powerful external threat.
Read more on political geography here: brainly.com/question/2242946
C. urban areas I hope the answer was right if not sorry