The first one can be seen either way. For me, I saw a vase first. In all of the pictures, the black drawing is considered the positive space and the white background behind it is considered to be the negative space. If you look at the vase picture again and imagine the background to be the black portion, you see two faces.
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Hello
The answer is A. Flying buttress
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It is a great example of recycling. There are many was to use it but here are 5 that I find useful:
- Remove oil stains. Sometimes when we move the car, we notice oil stains on the floor, but we can use a bunch of sharpner dust and spread it over the stain. Leave it for an hour or more and the chip would have absorbed all the oil.
- Strong plants. If you want strong and beautiful plants, you just have to mix some of the dust with the soil and within days you will start to notice the difference.
- Covering the holes. Here you have to prepare a mix using the dust and glue (resistol). Cover the hole and wait for it to dry, then use some sandpaper to make it even and paint it with the color of the wall.
- Herbicide. Tired of all those bugs eating your plants? You can put some of that dust in the edges of where the plants are and they wont be getting near them
- Shoe marks. In some countries like Chile, people use to spread some of that dust on the floor at the entrance of their houses or stores so that they step in it and don't leave marks inside.
I hope you find this information useful and thank you for recycling!
