I need help with this ASAP please and thank you

What structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.

East asia’s is dominated by dry highlands and grasslands. a. north and east c. north and west b. south and east d. south and west