1. Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans? Humans and other multicellular organisms have large bodies and require a lot of oxygen to reach ...
CBSE Class 10 Exam 2025: The CBSE Class 10 Science Exam 2025 is just a day away, and students are in the final stage of their preparation. This is the most crucial time to consolidate your knowledge, ...
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