If our blood used copper rather than iron (cyanoglobin as opposed to haemoglobin), what colour would it be?
Respuesta
Green.
Blue.
Red.
Yellow.
Pregunta 4
Pregunta
If you were on the pavement (or sidewalk I guess) by the Empire State Building and were hit on the head by a penny dropped from the top, what would happen to you?
Respuesta
It would kill you.
It would cause a nasty gash but probably wouldn't be fatal.