Where does gas exchange occur in terrestrial arthropods?

A. through gills
B. through their skin
C. through tracheae
D. through lungs


Answer: C

Biology & Microbiology

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a. intercept sunlight. b. of some species form toxins. c. actively orient relative to the sun to favor optimal position. d. come in simple and compound forms. e. fit all of these descriptions.

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Which of the following choices lists the organs of the bird digestive system in the correct order, from first to last contact with food material?

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At equilibrium, the concentrations of the reactants equals that of the products

Indicate whether the statement is true or false.

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