Answer:
The geographical isolation of the country.
Explanation:
Language on Iceland hasn't changed much since 1300s. The reason is simple. Iceland is located in the far northwest of Europe, not being connected with the rest of the continent. Therefore, it is practically impossible to discuss about any changes in culture, language, customs... during a long period of time. This isolationism formed a specific culture.
Radar because the waves are reflected back off of the source so with the reflection it's hard for them to see earth surface.
Answer:
common meaning of tree is :
supply of oxygen
An anthropoid; this should be classified as biology not geography