Because vaccines have healthy viruses that try to get your body to be immune to the diseases so when you are already sick your body won't respond to the vaccine because it's just more viruses
Answer:
Insulin
Explanation:
Insulin and glucagon are hormones secreted by islet cells within the pancreas. They are both secreted in response to blood sugar levels, but in opposite fashion! Insulin is normally secreted by the beta cells (a type of islet cell) of the pancreas.
The answer is B because a virus would be more effective
Alcohol is a depressant
nerves cells destroyed by alcohol abuse usually leads to cirrhosis.
it's called fetal alcohol syndrome
