You are shopping for fertilizer for your new tomato plants in your garden. You have a choice between a name-brand fertilizer and a generic-brand fertilizer, which are both in liquid form. The labels indicate that they are identical in composition (the type of nutrients and their amount per unit volume of fertilizer are identical). The name-brand fertilizer advertises that it is superior to any other fertilizer on the market. To test the claims of the two fertilizers you decide to buy one bottle of each and treat equal numbers of "Big Boy" tomato plants (a single type of tomato that goes great with salads) with the same amount of each fertilizer for the entire growing season. Using the information from the paragraph above, which of the following is an example of a controlled variable in your experiment? A) growing the same type of tomato plant B) using the same amount of fertilizers C) using 2 different fertilizers D) growing the same type of tomato plant and using the same amount of fertilizers
You are shopping for fertilizer for your new tomato plants in your garden. You have a choice between a name-brand fertilizer and a generic-brand fertilizer, which are both in liquid form. The labels indicate that they are identical in composition (the type of nutrients and their amount per unit volume of fertilizer are identical). The name-brand fertilizer advertises that it is superior to any other fertilizer on the market. To test the claims of the two fertilizers you decide to buy one bottle of each and treat equal numbers of "Big Boy" tomato plants (a single type of tomato that goes great with salads) with the same amount of each fertilizer for the entire growing season.
Using the information from the paragraph above, which of the following is an example of a controlled variable in your experiment?
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