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 ...

Important Tips to Attempt Competency-Based Question CBSE: 50% of the questions as competency-based questions in 2025 Board Exams Get Multiple Choice Question and Subjective CBQs from Heredity for 2025 ...

The topic of 'Heredity' in Class 10 Science (Biology) is an important part of the Science subject and can be that one chapter ...

The CBSE Class 10 Social Science board exam for 2026 is scheduled for Saturday, March 7, 2026, from 10:30 am to 1:30 pm. The exam will have questions from four parts: History, Geography, Political ...