Sound waves with a large distance between a and b would be sound waves that have a large and produce loud sounds.

What is a compass? how does it work

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

Which is not a cash crop grown in the high islands of melanesia and polynesia? d. rubber c. coffee b. sugar cane a. kiwifruit