Which would be considered a physical change of matter?

Which two characteristics belong to mahayana buddhism. a. followers worship and offer animal sacrifice at festivals b. a followers highest aim is to attain the status of a bodhisattva c. an emphasis is placed on fulfilling sensual pleasure d. this form of buddhism is the most acient for od buddhism that exists today e. followers belive that everyone is capable of attaining enlightenment

What period of history refers to the time when people did not have written records

Alarge new diamond mine has just opened and the price of diamonds has gone down since she has study economics is cecilia decides to buy diamond necklace and she knows that