During the past century, the temperature of Earth has increased by ________.
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Which layer of the earth's atmosphere contains the ozone layer?
A level of atmosphere which is composed partly of electrons and positive ions is called
If water smells bad, then that odour can be removed by adding
Uranus is the _______ planet from the Sun.
A worksheet range is a
In which year was Communist Party of India - Marxist (CPI-M) founded?
Aung San Suu Kyi is the