A gardener noticed that his plants were not as tall this year as last year. He hypothesized that the soil was deficient in nitrogen. To test his hypothesis, he treated the soil in half his garden with a fertilizer that had a high percentage of nitrogen. He left the other half untreated. Within a month, he found that the plants in the treated half of the garden were taller than the plants in the untreated half. What inference might the gardener logically make from his experiment?
The plants in the untreated soil did not grow as tall.
The garden soil had been deficient in nitrogen.
Growth of plants is not affected by fertilizers.
The plants in the treated soil grew taller.
All of the following are fruits except which one?
cucumber
beet
pumpkin
corn
tomato
Bags of fertilizer are labeled with the chemical symbols of the elements they contain. Which three chemical symbols represent the nitrogen, phosphorus, and potassium found in the fertilizer?
N, Ph, P
Ni, P, K
N, P, K
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