1. Mixture--Lettuce AND tomato 2. Mixture-- Air consists of many different elements and gasses 3. Pure-- You aren't changing the substance of wood by shaving it, but if you were thinking from a makeup level it would be a mixture to begin with 4.Mixture-- There is more than just water in pond water...bacteria and such. 5. Not sure--I might say pure but I don't know for sure 6. Mixture-- Sugar AND water
