Because the gene for the O blood type is common within in the gene pool.
It doesn't matter whether the gene is dominant or recessive, it matters on how on that ^
The equation for cellular respiration is in the picture
A= C6 H12 O6
B= 6O2
C= 6Co2
D= 6H2 0
E= ATP
Hope this helps! Have a great day!! :)
Lazzaro Spallanzani's experiment is a good example of creativity, because he designed the experiment and found a new way to explore gastric juices. So...
Lazzaro Spallanzani, an Italian biologist and physicologist, was the first scientist to dissect animals for digestion trials.
He used the animals as models for humans digestive system, designed the experiment, and was the first to interpret the process of digestion.
I hope that helped ^_^