Krusty was told that a certain itching powder was the

newest best thing on the market, it even claims to cause

50% longer lasting itches. interested in this product, he buys

the itching powder and compares it to his usual product.

one test subject (a) is sprinkled with the original itching

powder, and another test subject (b) was sprinkled with the

experimental itching powder. subject a reported having

itches for 30 minutes. subject b reported to have itches for

45 minutes.

control group?

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.

Idk