The rate arlt which a parent atom creates daughter atoms is a. unstable and changing b. constant and unique c. unstable and rate d. never found in nature

All of the following came out of china and were exchanged along the silk road, except a. papermaking b. block printing c. buddhism d. compasses select the best answer from the choices provided a b c d

Which statement about portugal is not true? a. it granted independence to its last colony in 1975 b. it has avoided conflict with spain c. it was a leader in european world exploration in the 1400s d. its economy is changing from agricultural to industrial b. it has avoided conflict with spain

In plate tectonics, why is the north american plate tectonically inactive?