The analysis of the of elements in meteorites located by scientists convinced astronomers that the origin of the solar system can be traced back to 4.6 billion years ago.

In an effort to japan recover from the devastating effects of the 1929 depression, japanese military leaders in the 1930s formed an alliance with nazi germany negotiated more trade treaties with the soviet union closed its doors to western trade adopted a policy of imperialist expansion

Formidable obstacles of climate, terrain, and distance hinder exploitation of natural resources in russia. true false

Plants in the arctic tundra must be able to live a) in wide range of temperatures b) without sunlight for the most of winterc) without waterd) at high elevations