B An ecosystem because it is i dont know how to explain but i think is that one
Answer: organic
Explanation: Its melting point is -44 °C
If I am not wrong, I believe the answer is Producers. The reason as to why I say that producers is the answer is because in every food chain, there needs to be a base. That base is what provides the starting energy that will later on move up in the food chain.
Answer:
It increased their life expectaion.
Explanation:
It says it on the graph.
