Producer gas leaves the gasifier as the mixture of combustible and non-cobustible gases alongwith tar vapour, water vapour, dust, mineral vapour.

生产者气体离开作为可燃和非alongwith cobustible气体的混合物气化炉焦油蒸气，水蒸汽，粉尘，矿物蒸汽。

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Much of it resulted from volcanoes blasting out gases like carbon dioxide and water vapour, which allowed ice (also a mineral) to form near the poles of Earth, and possibly on Mars too.

ECONOMIST: Minerals