Answer:
a karst valley
Explanation:
Karst is a topography found in rainy regions with soluble rocks such as limestone, gypsum and dolomite. The rocks are reduced by dissolution, forming drainage systems with caves and sinkholes, which could be underground or exposed to the surface.
Answer:
The US wanted to find out how communism was spreading so fast
Explanation:
The US knew how the USSR had become a super power, and they didn't care how the citizens were being treated. The threat of a nuclear attack was on the minds of many, but the US's main goal during the Cold War was to prevent communism from spreading, so using intelligence agents to find out how it was spreading is the best answer.
Answer:
They tend to have little rain, high daytime temperatures, and sparse plants adapted to the harsh conditions. Climate is the key abiotic factor that determines where terrestrial (land) biomes are found. ... Certain types of biomes tend to fall in rough bands along Earth's north-south axis.