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.
A and C is not advocatable unless you want to get thrown in jail ._.
B is just a friend, but D is the right answer (good job!) because you want to support someone with special needs.
Answer:
False: They should last 20 to 30 min
Explanation:
Answer:
Participating in sports
Explanation:
Sports and physical activity can lower stress levels! :)
