I need help with Scientific experiment project !?

Question

the project is that you get an ad from anywhere and you test the product or products and or compare them such as (drinks, paper towls, fragrances, fertilizers, soil etc.) i need a good one that i can easily do and plz tell me the controls, constants and such. thanks and also u can plant a seedling to compare soils and such.

Answer 1

why don't you compare drinks and how they can act as perservatives.

Use coke, lemon juice, gingerale, mineral water etc.

Cut banana slices and put one slice in each drink. At the end, looking carefully to see which banana is least rotten and in which drink. This drink would be the best perservative.

Also,

You can test carpet cleaners. Obtain many small samples of carpets and spill something on each one (so that it leaves a stain.) Test various types of carpet cleaners (different one on each one) and see which worked the best.

hope this helps! =)