6. Make a prediction: Which of the following would most likely have happened if Indian farmers had not learned how to irrigate their fields?
a. Towns would not have had indoor plumbing.
b. Villages would not have grown along the rivers.
c. Aryans would not have invaded India.
d. Rajas would not have claimed Indian lands.
7
In which language did Aryans write their poems and hymns?

Southern Tundra is not a major physical feature of South America.

Option D

Explanation:

The main physical geographic feature of South America consists of mountains and highlands, coastal plains and river basins. Patagonian Plateau, Andes Mountains, and Brazilian Highlands come under the mountains and highlands category.

Tundra is a region that is found between ice-covered poles and coniferous forests in the northern hemisphere. Since it is covered with ice so coastal Antarctica also considered as the tundra region. Tundra literally gives meaning as treeless land. Also, in the winter season is not suitable for all species, only a few plants and animals can survive here.