Sentence Correction

An uncommon method of home building relies on the construction of extremely thick walls to reduce the energy needs due to heating and cooling; the resulting building, with internal spaces that maintain a constant temperature although the outside air that flows through them varies in temperature, are known as "earth ships."

internal spaces that maintain a constant temperature although the outside air that flows through them varies in temperature, are known as "earth ships."

internal spaces that maintain a constant temperature although they are supplied by varying temperatures of outside air, are known as "earth ships."

internal spaces that maintain a constant temperature although the outside air that flows through them varies in temperature, is known as an "earth ship."

constant temperature internal spaces although the outside air that flows through them varies in temperature, are known as "earth ships."

internal spaces that maintain a constant temperature although they are supplied by varying temperatures of outside air, is known as an "earth ship."



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