Which antibody and antigen combination match each blood type? Antigen B and Antibody A are present
Antigen A and Antigen B are present
Antibody A and Antibody B are present
Antigen A and Antibody B are present
B

AB

O

A

a chair, a bed, and a toothbrush

explanation:

i was told this before by a teacher, so yeah

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

in case if a person is bitten by a snake then after contacting the medical control, there is a need to apply a pressure immobilization bandage and try to make the person calm and as still as possible unless and until any medical comes.

try to avoid washing of the bitten region as any venom left on the skin can in determining the snake. make sure to not cut the wound, or try to suck the venom out from the region, and do not apply any kind of tourniquet.