Answer:
Megalithic Temples of Malta
Dating back to 3600 BC and 700 BC, the Megalithic Temples of Malta are considered to be the oldest free-standing structures on earth. The temples were built during three phases of cultural revolution – Ġgantija (3600-3200BC), Saflieni (3300-3000BC) and Tarxien (3150BC-2500BC).
Explanation:
Two hazardous conditions are radiation and small debris and u can use gold to reflect the uv radiation and u can use strong metals to prevent debris from damaging the shuttle.
Answer:
The permafrost found in the tundra is the permanently frozen subsoil layer.
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