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?

How can you keep track of variables in a science experiment?

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.