Onion Reaction To Chlorine Essay

Length: 267 words

The hypothesis is supported by the findings that 0% of the green onions planted in bleach-contaminated soil showed any root growth over the 1- week period, and, in contrast, 100% of the green onions planted in non- contaminated soil grew at least 6.5 cm over the 1-week period. In addition to this data, research has shown that a common source of groundwater contamination is the handling and storage of bulk chemicals, such as bleach. These chemicals leak and spill from storage during transfer. Many chemical storage tanks are kept underground, where their leaks are kept undetected. The leaking chemicals become present in the soil and water of residential and rural areas as well as industrial areas. These facts show that there is a high likelihood that bleach is entering the soil and contaminating the groundwater by leaking from storage at the bleach company. One likely error in the results is the cession of root growth in Control #1 after the first day.

The roots grew from .5 cm to 7 cm and remained at 7 cm for the rest of the experiment, while the roots of Control #2 and Control #3 showed steady growth throughout the entire 1-week

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experiment. One likely cause of error is the health of the green onion in Control #1 prior to the experiment. It may have been a weaker plant and died due to lack of sunlight. Another likely cause of error is human error. The plant may have been mishandled and killed during its first root measurement. The results of this experiment and other facts prove that bleach-contaminated water is a definite factor in the failure of onions to take root.

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