Which of the following is NOT an effect of Noise Pollution?
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___________ is obtained by evaporation of sea.
Which of the following layers of the atmosphere makes Radio Communication possible?
The outermost layer of Earth is called _______.
Which drug is used to cure Migraine?
Living things constitute the biotic component of the ___________________.
The salt concentration (measured as salinity in parts per thousand), is less than ______ % in inland waters.
Equinox means the date when ___________.