The answer I think it’s b
Brazil is one of the only countries that is close to a closed a economy because it barely imports anything into its country.
Answer:
The air in India had cleared up more than it has ever been before. There was so much smoke in the air before that people couldn't see the blue in the sky only gray from the smoke.

The processes that take place on or near the surface of the earth that makes the surface wear away. They cause degradation and wearing away of the Earth's surface.
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- The main types of exogenic processes are weathering, mass wasting, erosion, sedimentation.
- Weathering is the breaking down of rocks to form soil. They can be physical, chemical or biological.
- Erosion is the transportation of rock debris by geomorphic agents like running water, the wind, waves etc.
- Deposition is the end result of erosion.
- Sedimentation is the process of leaving sediment anywhere because of larger mass at the bottom level.