2. In higher concentrations, ozone may cause health effects after inhalation. Symptoms, such as mucous membrane irritation and headaches, often follow. These symptoms can also occur during episodes of photoche-mical smog. Higher concentrations (> 50 ppm) and long-term exposure (> 30 min) may be fatal . However, remaining in a room with these kinds of concentrations is nearly impossible.
3. We have much garbage so that we have to make something to reduce this problem.
4. It’s a good idea!!!!!! We can join the bottles In order to re-use.