What effect would a barrier island have on shoreline of the mainland?

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand

What did the native title act do? a. it recognized and protected aboriginal rights to land. b. it stated that aborigines were to be counted as part of the census. c. it established aboriginal languages as official. d. it granted aborigines suffrage.

Read the article titled "castro resigns." why did the us impose trade sanctions against cuba in 1962?