Small, isolated groups of Central American Indians are nearly 100% type O for the ABO blood system. This is best explained as being the result of: a
genetic drift
b
artificial selection
c
fitness
d
natural selection

what are the options?

answer: glucoamylase presented optimum activity at temperature of 55â°c, and, in the glycosidic bonds from the non-reducing ends of starch, resulting in the production of glucose. source and type of fermentation can affect the enzyme's properties

credit to kalahira

the correct answer is b

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds