World Water Day Quiz
When is world water day celebrated every year?
Who uses more water Developed country's household usage or developing?
What percentage of the water on earth is fresh water?
How many known sources of fresh water are there?
Which one of the two uses most amount of water in the developed countries?
World Water Day Quiz
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Underwater vehicles Quiz
What is the name of the submersible that found RMS Titanic ship ?
What is a submarine ?
Are all underwater vehicles called submarine?
Which submersible is certified to go any depth in the ocean (full ocean depth) at present?
Which of these is also a submersible?
Underwater vehicles Quiz
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