Answer:Trench Warfare was a form of military conflict in which opposing sides fought one and other from trenches facing one and other.some difficulties of trench warfare is diseases such as trench fever and trench foot became common.
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Taiga is a life zone of vegetation, composed primarily of cone-bearing needle-leaved or scale-leaved evergreen trees. It's a forest of the cold, subarctic region. The subarctic is an area of the Northern Hemisphere that lies just south of the Arctic Circle. The taiga lies between the tundra to the north and temperate forests to the south. Alaska, Canada, Scandinavia, and Siberia have taigas.
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