What are barnacles?
Barnacles are small shellfish. They swim freely when they are hatched but latch on to a surface once they are adults. Millions of barnacles may be thus attached to a surface like the hull of a ship, forming a crust. This can reduce the speed of the ship by 50%! Loss of time and wear and tear on machinery because of the barnacles can cost the ship’s owners dear.
Related posts:
Why does the sun have spots on it? Complete General Knowledge Question and Answer for Class 6, 7, 8,...
General Knowledge
What are viruses? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12...
General Knowledge
What is the Dead Sea? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 an...
General Knowledge
Do you know “Dance without any musical instruments".
Do you know
GK Question "Can Animals See In Colour?" general knowledge book English 2021 current affairs quiz an...
General Knowledge
Why is Neptune blue? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and...
General Knowledge
GK Question "How The Sun Keeps Shining?" general knowledge book English 2021 current affairs quiz an...
General Knowledge
What is radioactivity? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 a...
General Knowledge
GK Question "Why The Colour of Male Birds Are Brighter Than The Female Birds?" general knowledge boo...
General Knowledge
Do you know “Heroes and heroines in Indian comics-expert exponents of Kalaripayattu”.
Do you know
Why do ducks go bottoms up when water? Complete General Knowledge Question and Answer for Class 6, 7...
General Knowledge
Do you know “Travancore Maharaja's bed”.
Do you know
Do you know “Voices can levitate stones".
Do you know
What are maglev trains? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 ...
General Knowledge
GK Question "First Of All, I When Were The Rockets Used?" general knowledge book English 2021 curren...
General Knowledge
What are molluscs? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 1...
General Knowledge
What is the eye of a hurricane? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9,...
General Knowledge
What is a four-wheel drive? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10,...
General Knowledge
What is wax? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Stud...
General Knowledge
What were ancient villages like? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge