CBSE CLASS 10 ,SCIENCE AND MATHS PREVIOUS YEAR QUESTIONS
Akash Institute Science and Maths Previous year questions Science Solution Maths Solution CBSE Important Questions for Class 10 Maths Board Exam 2020-21 1-3 2-4,5,6 3-6,9 4-3 5
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previous year questions -learninsta What will happen if we kill all the organisms in one trophic level ? Why is damage to the ozone layer a cause for concern ? What steps are being taken to limit this damage ? Name the organism Mendel used for his experiments. Explain about F 1 and F 2 progeny obtained by Mendel when he bred tall and short varieties of the organism he experimented with. (CBSE A.I. 2010, CCE 2012) Why is DNA copying an essential part of the process of reproduction ?
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