I believe that the answer is the third option: All of the answers are correct.
Explanation:
Drug effects do greatly vary depending on the circumstances. Some drugs are dangerous in high dosages, some only require a small amount to be dangerous. It also depends if the person taking the drug is using any other substances. It definitely depends on how the drug is consumed, too.
Oil polluting, chemical gas release harms the environment by contaminating groundwater, soil, and water. Climate change. Some countries are experiencing a decrease in rain.
