What contributed to the decline of the Indus Valley civilization? Select all correct answers.

Indus Valley populations migrated to Central Asia and Africa.

Volcanic eruptions covered the land with molten lava.

Centuries of floods made the soil salty and unfit for farming.

The surrounding land was severely deforested.

Diseases reduced the population.

What are three voluntary behaviors that is not control by results?

Of the following choices, which ones are characteristics of west african society? select all that apply. a. arabic was the main language used when trading with other societies. b. christianity was the only religion practiced in villages. c. slaves had no rights and were only given specific farming tasks. d. skilled workers were a higher level in the caste system than traders. e. religious rituals encouraged the honoring of ancestors.

What impact does geography have on where people live in brazil?