It could be difficult if you did not know any of the signs, first sign could be pupils are larger than normal do you know if this person is a drug user of any kind..do they prefer uppers or downers some signs are loss of sleep sometimes even days and loss of appetite..when it wears … Read more
Similarities:
Both fly
Both are machines
Both have wings.
Differences:
The most immediate and obvious difference in the construction of a fixed-wing aircraft and a helicopter is of course the latter's use of a rotor instead of a wing.