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Author Question: After reading the paragraph below, answer the questions that follow.In 2011, scientists investigated ... (Read 23 times)

chads108

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After reading the paragraph below, answer the questions that follow.

In 2011, scientists investigated whether the salts that are spread on icy roads to melt the ice are diluted enough by spring rainfall so that they do not have negative effects on amphibian species that breed in nearby areas. They exposed clutches (groups of eggs) of salamanders to three test conditions with varying salt concentrations (road salts mixed with dechlorinated tap water) to simulate salt concentrations of small pools of water located near highways that are typically fed by rain—areas where salamanders often lay their eggs. After 9 days, the scientists placed the three groups in "normal" water and measured how much body mass the salamanders lost every 3 days for 9 days. They chose to measure change in mass because salamanders are able to take in water, which helps lower the chances of salamander embryos dying from freezing, disease, or predation. The table below provides partial results of this study.

GroupChloride Concentration in Test ConditionsTotal % Mass Lost after 9 Days of Exposure to Test ConditionsTotal % Mass Regained after 9 Days in Normal Water ConditionsAdditional % Mass Lost after 9 Days in Normal Water Conditions
1145 mg/L20%15%0%
2945 mg/L35%0%10%

What conclusion did scientists likely draw from this study?
◦ Rainy conditions may not be enough to dilute road salts that have high salt concentrations. Therefore, salamander clutches will experience minimal physiological damage.
◦ Rainy conditions are enough to completely dilute road salts that have high salt concentrations. Therefore, salamander clutches will experience minimal physiological damage.
◦ Rainy conditions are enough to completely dilute road salts that have high salt concentrations. Therefore, salamander clutches will not experience any permanent physiological damage.
◦ Rainy conditions may not be enough to dilute road salts that have high salt concentrations. Therefore, salamander clutches will face permanent physiological damage.


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Marked as best answer by chads108 on Jul 15, 2019

upturnedfurball

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Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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chads108

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Reply 2 on: Jul 15, 2019
Gracias!


kilada

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Reply 3 on: Yesterday
Wow, this really help

 

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