__________ is the interaction in which one species benefits and the other is neither harmed nor benefited.
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There is a protocol signed to reduce production of CFC, known as
If water smells bad, then that odour can be removed by adding
What is the process of waste water treatment is commonly known?
Salination of soil is caused by
The Ozone layer is present in which atmospheric layer?
Which of the following is NOT a metamorphic rock?
In India which of the following taxes is levied by the State governments?