How old is our Universe?
How old is Solar System?
Where was the biggest meteorite found?
What does the colour of a star depend on?
What is the name of the first continent?
Where is colder: on the North Pole or on the South Pole?
From what language and how does the world “diamond” translate into Russian?
Who invented electrotrain?
how was called the first plane?
From what language and how does the world “aviation” translate into Russian?
Who and when invented He first film?
Kinds of heat-conducting
The nearest star - where and its name
Effect of “Dear Water”
What does it mean “Blue Ribbon of Atlantic”?
Why do people say: “Time flows”?
What film produced the first tooth paste?
Who and when produced the first jeans?
Why are chips called chips?
Who invented “pasta”?
What instrument is called “The queen of music”?
Principle of work of Hovercraft.
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