Final answer:
Death from alcohol intoxication can begin at a BAC of approximately 0.45, with higher levels increasing the risk of acute effects and fatality.
Step-by-step explanation:
Death can result from alcohol intoxication beginning at a blood alcohol content (BAC) level of about 0.45. Higher BAC levels cause acute intoxication (0.20%), unconsciousness (about 0.30%), and even death (about 0.50%). It is crucial for individuals to understand the dangers of excessive alcohol consumption and the rate at which the body can metabolize alcohol to prevent alcohol poisoning and its potentially fatal consequences.