Answer:
i think nicotine travels through blood and we know blood reaches the right ventricle first
maybe right ventricle
Th earth scientists have improved our understanding with the environment because of their studies in which they had shown better understanding and explanation of occurrences with the means of having to provide not only explanation nor visuals but also providing proof of these mere existence that made people believe and understand the environment.
The answer is D because only one species benefits from it
