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 2024-25 Competency-Based Questions With Answers: The CBSE Class 10 Science chapter on Life Processes covers essential functions in living organisms, such as nutrition, respiration, circulation, ...

CBSE 10th Science Question Paper 2025 PDF: The Central Board of Secondary Education (CBSE) exams started on February 15, 2025 (Saturday). Here is the free PDF of the question paper of the CBSE Board ...

CBSE Class 10 Board Exam 2025 Live: The Class 10 Science paper was held in a single shift, from 10:30 am to 1:30 pm. CBSE Class 10 Board Exam 2025 Live: Central Board of Secondary Education (CBSE) ...

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, ...

CBSE Board Exam 2025: The CBSE Class 10 Science paper is scheduled to be conducted today, February 20. Candidates must carry their CBSE admit card 2025 and school ID to appear for the exams. The exam ...