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Elza [17]
3 years ago
7

Which two body systems must directly interact for vertebrate organisms to exchange gases? A) Skeletal system and muscular system

B) Excretory system and reproductive system C) Circulatory system and respiratory system D) Digestive system and immune system
Biology
1 answer:
Angelina_Jolie [31]3 years ago
5 0

Answer: The answer is B

Explanation:

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Which component of Earth’s atmosphere is decreased due to photosynthesis? ozone oxygen hydrogen peroxide carbon dioxide
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Answer:

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