who and when invented the bycycle (short note on that scientist)
Answers
Hey mate here is your answer
The first verifiable claim for a practically used bicycle belongs to German Baron Karl von Drais, a civil servant to the Grand Duke of Baden in Germany. Drais invented his Laufmaschine (German for "running machine") in 1817, that was called Draisine (English) or draisienne (French) by the press.
Karl Freiherr von Drais (full name: Karl Friedrich Christian Ludwig Freiherr Drais von Sauerbronn) (29 April 1785 in Karlsruhe – 10 December 1851 in Karlsruhe) was a German forest official and significant inventor in the Biedermeier perio.
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Answer the air breathed in reaches the air sacs that are surrounded by blood vessels.these blood vessels transfer the oxygen present in the air to the blood.the carbon dioxide present in the blood passes to the air sacs
Explanation: