BALLPOINT PENBiro Brothers
THERMOMETER? Galileo
ROTARY STEAM ENGINE? James Watt
JET ENGINE? Sir Frank Whittle
GUNPOWDER? Roger Bacon

 
 
Grand Central Terminal, Park Avenue, New York is the world's largest railway station.
 
 

Age

Newborns (0-2 months)
Infants (3-11 months)
Toddlers (1-3 years)
Preschoolers (3-5 years)
School-age children (5-10 years)
Teens (10-17 years)

Sleep needs

12-18 hours
14-15 hours
2-14 hours
1-13 hours
10-11 hours
8.5-9.25 hours

                                                                                                                                                              Source : NATIONAL SLEEP FOUNDATION

 

    General Knowledge

    They are general knowledge. I just store them together.

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