I dont remember much of biology but i do remember my teacher saying something about phosphate backbone, i know its not much help. sorry!!
While there is no graph provided and I cannot find the graph online, I will base my answer through theory.
In theory, the most common blood type is O+, followed by A+, then B+, then AB+. Rh negative blood is deemed to be rare. While the most common blood type is O+, the same blood type is also called the "universal donor" as a type O+ blood has no antigens attached in red blood cells therefore the probability of adverse reactions (i.e. hemolytic reactions) when transfused to other blood types are close to nil. In an emergency situation, wherein there is not enough time to do proper crossmatching, blood type O+ can be used therefore supplies of blood type O+ are easily depleted.
H2o is the most common molecule in the human body. Remember the fact that 70% of the human body is made of water? H2o is the molecule for water, meaning that H2o is the most common molecule.
If this helped please give brainliest answer!
Ore is the answer as is contains large amounts of useful elements
Answer:
1st, 3rd, 5th
Um the brainliest answer would be appreciated greatly :)
