The same amount of alcohol will be more diluted in a larger individual because this person has a bigger surface area in his body and his bodily fluids are greater than those of a small person's. With this the liver and pancreas' capacities to release enzymes necessary to breakdown the alcohol is more efficient and comes in bigger dosages. However, it should be noted that regardless of the effects of this in the body, a person should still know how to regulate alcohol intake as this has other known effects in the body (e.g. mentally and physically).
A the spinal cord and central nervous system are developing
I think it means effects?
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Hope this helped :)
The species can no longer survive in those conditions and become extinct.