Q31 of 66 Page 15

What is an ecosys

Ecosystem is a unit of biosphere where interaction between biotic community and abiotic factors of an area or place takes place with each other.


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"Our food grains such as wheat and rice, the vegetables and fruits and even meat are found to contain varying amounts of pesticide residues." State the reason to explain how and why it happen? ( CBSE 2012, 2011)