Zaɓi amsar da ta dace: Tsarin yanayin kewayawa
Amsar ita ce: stratosphere
Layin yanayi na kewayawa shine stratosphere, Layer na yanayin da ke kewaye da saman duniya. Ya ƙunshi nau'ikan iskar gas, kuma abu ne da ya zama dole na zirga-zirgar jiragen sama, saboda yana ba da damar jigilar fasinjoji daga wata ƙasa zuwa wata. An raba stratosphere zuwa yadudduka, tare da iyakokin da ke tsakanin su da zafin jiki. Yayin da muke motsawa sama ta cikin yanayi, zafin jiki yana tashi, kuma mafi girman bambancin zafin jiki yana faruwa tsakanin troposphere da stratosphere. Har ila yau, stratosphere gida ne ga Layer na ozone, wanda ke ba da kariya daga hasken ultraviolet na rana.
