The largest city in africa is
a.
lagos, nigeria
b.
addis ababa, ethiopia
c.
cairo, egypt
d.
johannesburg, south africa

Frequency is the number of complete oscillations of a wave per second.

The whale was a missile blasting from beneath the surface.  2.) a majestic whale leapt skyward before diving back into the sea.    these are both figurative language. this is so because the whale in sentence "1" was not actually a missile, nor was it actually blasting. now, for sentence "2", a whale can not actually "leap".