Oxygenated (arterial) blood is bright red, while dexoygenated (venous) blood is dark reddish-purple. The difference is color results from the electronic state of the iron ion (ferrous vs ferric), which in turn influences the π → π* and n → π* electronic transitions of porphyrin and hence its optical characteristics.
OK so if you mean that it will not pollute the air then yes this is true.
Answer:
The ability to recognize and react to pitches is evident in all great hitters. You have a miniscule amount of time to see the ball, recognize the pitch, its velocity and location and then have the ability to generate the mechanics to make hard contact.
