This topic contains a solution. Click here to go to the answer

Author Question: After reading the paragraph below, answer the questions that follow.In 2011, scientists investigated ... (Read 75 times)

chads108

  • Hero Member
  • *****
  • Posts: 507
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.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by chads108 on Jul 15, 2019

upturnedfurball

  • Sr. Member
  • ****
  • Posts: 334
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.
Answer Preview
Only 25% of students answer this correctly




chads108

  • Member
  • Posts: 507
Reply 2 on: Jul 15, 2019
:D TYSM


Kedrick2014

  • Member
  • Posts: 359
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Your heart beats over 36 million times a year.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

For a complete list of videos, visit our video library