Both aquatic and terrestrial organisms must have ____ across which gas exchange can take place

a. a respiratory system
b. tracheal tubes
c. gills and lungs
d. stratified squamous epithelial tissue
e. a moist surface


e

Biology & Microbiology

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Define and give examples of several vestigial structures

What will be an ideal response?

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When a muscle cell contracts, what type of work is being powered by ATP?

A) chemical B) transport C) mechanical D) potential

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Radioactive decay can be used to measure which of the following?

A. Chemical bonding B. Time C. Moisture D. Pressure E. Temperature

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What kind of fruit is formed from fused ovaries of several individually pollinated flowers?

a. aggregate b. simple c. multiple d. accessory e. berries

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