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Animals have a variety of adaptations, including trachea and gills, which allow this key process to occur. Which provides the molecules necessary for cellular respiration and efficient ATP synthesis? A. Digestion B. Gas exchange C. Nutrient absorption D. Waste elimination

User Rupello
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2 Answers

4 votes

Answer:

b

Step-by-step explanation:

For oxygen

User Bill Johnston
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4 votes
I think A if I’m wrong sorry ....
User WiiBopp
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