Which of the following is a correct order in which air moves through the human respiratory system when a person inhales?
A. nose, larynx, trachea, pharynx, bronchi, lungs
B. nose, pharynx, larynx, trachea, bronchi, lungs
C. pharynx, bronchi, nose, larynx, trachea, lungs
D. pharynx, nose, trachea, bronchi, larynx, lungs

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented. b)scientists had not completely finalized their results, which took 30 years. c)cigarettes were cheaply available and media channels were very inefficient. d)cigarette manufacturers were trying hard to bring an alternative into the market

Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.