Neurotransmitters? im not 100% sure
C will be your answer .medicine containers do have the expectation date. instructions on how to take it and how many & it has the numbers of the medicine.
Answer:
That is indeed true!
Explanation:
Heraclitus means that all things are ever changing, yet preserve an identity through the changes.
eg. Plants need water, but floods kill plants
Sea water is good for fish, but bad for humans.