Nitrogenous base, sugar and phosphate
A Respiration by animals CO2 is being added.
B trees burning same
C tree leaves removed
D oil added
It is very easy and simple difference that is antigens and antibodies .
it can be different due to donor and recipient also .
A type blood having antigens
whereas B type blood having nil.
B type blood having antibodies
whereas A type blood having nil.
Answer:
round worms reproduce sexually
the nervous system of a roundworm contains a brain and nerve cords
Natural selection is the right answer hope this helps.
