The drug connects receptors that are only connected during sex, eating your favorite food, excising, etc. Therefore releasing <span>Endorphins. This makes you feel really good. Soon your brain will run out of </span><span>Endorphins since the drug makes it release them all at once making you need the drug to function (addiction).</span>
The answer is toxic waste
Answer: observational study
Explanation:
The observational studies are those studies where the researchers observes the samples or individuals of research without any intervention or manipulation.
In epidemiology, and nutritional studies the researcher observes the risk factors associated with the disease, diagnosis and treatment. The effect of a diet on the patient or volunteers can be done through observational studies.
for heart burn take Anti-acid,for backpain take Analgesic,and also take rest
