Kinar: Randy, I saw several old tires in front of your house. What are you going to do with them?

Randy: My neighbors and I are going to place them along the ditch sides.

Kinar: What do you place the tires there for?

Randy: To grow vegetables.

Kinar: That's a great idea! I think you can also use oil packs or mineral bottles to grow vegetables.

Randy: I don't think so. We prefer making them into handicrafts.

Kinar: I see. People in your neighborhood are creative to utilize old Items to become useful ones. Anyway, will you paint the tires?

Randy: Yes, it will make them more beautiful.

Kinar: Ah, that will be nice. I will help you paint them.

Randy: Thanks. That's very kind of you.

Kinar: You're welcome. Anyway, I notice that the ditch in your neighborhood is clean now.

Randy: Yeah, we have cleaned it. We also look after fish in the ditch in order to provide nutritious food for us.

Kinar: Awesome! You really care for your environment and health.

Randy: Yeah! We should have a clean environment and healthy body.

Kinar: Absolutely! I believe that the ditch area will be a new tourist attraction.

Randy: I hope so.

Kinar: I think you should build a gazebo, too so that people can have a rest there while enjoying the ditch.

Randy: Yeah, we are going to do it.

Answer the following questions based on the dialog in Activity 3.

Why does Randy disagree with Kinar's suggestion to grow vegetables in oil packs or mineral bottles?