Will make and give away 20 extra points 1. how do scholars know that indo-aryans raised cattle and depended upon their milk, but later turned to agriculture? a. archaeologists have found evidence of the changes in tools used. b. the bhagavad-gita tells of the ancient people's lifestyle. c. the vedas provide a record of how the indo-aryans lived. d. dna matches from people today are able to detect the change in diet in bone history. . 2. what is the order in which the caste system has changed in india? a. castes are rigid and inflexible; people are born into a caste and cannot leave it. b. discrimination based on caste is determined to be illegal. c. a system of social classes based on birth evolved. d. castes are a prominent part of people's lives, but people may have been able to move around.