What is the passage from the mouth to the larynx and esophagus?

•pharynx

•trachea

•bronchi

•alveoli

Which of these conditions most likely produces an unstable isotope?

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false