the brand of food
The independent variable is the brand. The dependent variable is how absorbent it is. There may be other variables such as temperature, but I doubt different brands of paper towels absorb different amounts of heat or have different specific heats. There are crap tons of variables you probably don't have to worry about, because they're probably not that "variating" anyway.
Yes, different brands of dog food are ok to mix
There are hundreds of brands. Some popular brands are Passier, Pessoa, Crosby, Wintec, and Stubben.
Yes, there are several brands of bleach that is not tested on animals. Some of the brands are Biokleen, Ecover, and Sprouts Farmers Market brand.
There are several different types of wild bird seed. The most common and highly ranked wild bird seed is the Kaytee brand, and that can even be purchased online.
The independent variable is the thing that changes with in the experiment to make it an experiment. For example, say I was doing an experiment on something such as "Which sponge brand can absorb the most water?" The independent variable would be the different sponge brands because it would be the thing that changes with in the experiment. Otherwise, if you didn't make an independent variable (the different sponge brands in this case) it wouldn't be an experiment because a sponge of the same brand should hold about the same amount of water as the others.
An independent variable is the part of an experiment that you control. You can change it and make it anything. Such as an experiment dealing with the length of time it takes certain brands of chewing gum take to lose their flavor. The independent variable would be the brands of gum you decide to test, while the dependent variable would be the time it takes those brands to lose their flavor.
Different types of oranges, different soils, and different ripeness can cause changes in the amounts of vitamin C.
The independent variable is the brand. The dependent variable is how absorbent it is. There may be other variables such as temperature, but I doubt different brands of paper towels absorb different amounts of heat or have different specific heats. There are crap tons of variables you probably don't have to worry about, because they're probably not that "variating" anyway.
John Lewis offers several different brands. These brands include Bosch, Hotpoint, AEG, Miele and several other brands. I saw the Samsung brand at his site also.
There are several different companies that make structural adhesives. Brands include Plexus and Scotch-Weld.
Washer and dryers will be variable in costs. Looking around online will provide you with the option to compare different brands with different prices.
you cant... this is not a quantative test it is a qualitive test there is nothin to measure
There are several different brands of leave in conditioner available on the market. Some of these brands include Bumble and Bumble, Herbal Essences, Aussie, and Redken.
Pocket PC software is widely available in several different brands. Some brands that include this type of software are Windows, Hewlett Packard, and Compaq.
A list of the different brands of leaf vacuums available to consumers is headed by the Toro brand. Black and Decker is also included on the list and carries several different models of leaf vacuums. Sears also produces several different models of Craftsman leaf vacuums.
Walmart sells several different brands of air beds in their stores and on their website. Brands include Serta, Intex, Insta-Bed, Air Cloud and Simmons.