Answer:
One difference between the Rhesus system and the ABO group system is that Rh negative people don't usually possess antibodies against RhD (unless they have been previously exposed to it), whereas in the ABO group system if the antigen is absent from the red blood cells.
Here is the link to read more :)
https://www.mydr.com.au/tests-investigations/blood-typing
Answer:sikret lang baka malaman mo sagot ko e hehe
I believe it is the first option
The answer is B, because carbon monoxide is a poisonous gas, it has no smell or taste and continuous inhalation may choke you to death.
