Can one of the earths systems make a hole in a rock wall, And if so which one is it

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

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a.light in water b.light in vacuum c.sound in air. d. sound in water

Asap will mark geography final plz ! what are the benefits of international aid? (give me the right evidence )