navleen singh ***))))))))

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(((((navleen5875 uploaded a new presentation "Stephen Hawkig"

Uploaded: 11 months ago

Stephen Hawking was born on 8 January 1942 to Dr. Frank Hawking, a research biologist, and Isobel Hawking.

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(((((navleen5875 commented on his own presentation "Acid Rain"

11 months ago

acid rain is formed when sulphur dioxides and nitrogen oxides, as gases or fine particles in the atmosphere, combine with water vapour ..

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(((((navleen5875 : http://navleensingh.blogspot.com/

11 months ago