Class X
CBSE Sample papers & Answer Key | Math-Standard | 2020-2021 | Class X
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Class X
CBSE Sample papers & Answer Key | Science | 2020-2021 | Class X
Science-SQP class 10 Science-MS class 10
Biology
Management of Natural Resources | Notes | Biology | Class X
Anything in the environment which can be used is called a natural resource. Natural Resources includes total natural environment that support human life and contribute to the production of necessities and comforts to mankind. So natural resources are the components of atmosphere, hydrosphere and lithosphere. Types of Natural Resources: On the Read more…
Biology
Management of Natural Resources | Important Questions | Science | Class X
SHORT ANSWER TYPE QUESTION[II] [3 Marks] -Year 2007 Question 1.Suggest three ways to maintain a balance between environment and development to survive. [Delhi] Answer. The three ways to maintain a balance between environment and development to survive are as follows: Forest resources should be used in an environment friendly and developmentally Read more…
Biology
Our Environment | Important Questions | Science | Class X
SHORT ANSWER TYPE QUESTION[II] [3 Marks] – Year 2007 1. (a) What is ‘environmental pollution’? (b) Distinguish between biodegradable and non-biodegradable pollutants. (c) Choose the biodegradable pollutants from the list given below: Sewage, DDT, radioactive waste, agricultural waste. [Delhi] Answer. (a) Environmental pollution is an undesirable change in the physical, chemical Read more…