8. When drug companies find out that a drug target is not responding to their new drug, do they have
a legal obligation to inform other drug compa-
nies?​

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

no i don't feel that humans have oversubscribed some medications

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint