Discuss 3 environmental effects of using nacl on roads

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Reference no: EM133405374

Questions:

1. What is the control in this experiment? What is the dependent variable? What is the independent variable? The control in this experiment is

2. Suppose you were testing the LD50 of arsenic on animals. How would the results you get for a small perch (a type of fish) be different from the results you would get for a human? Why would they be different?

3. What is meant by LD50? Infer what LD25 and LD75 are based on your knowledge of LD50.

4. Discuss 3 environmental effects of using NaCl on roads and highways during ice and snow storms.

5. Define salinization and describe how it affects agricultural land on developing crops.

6. What are sources of salt on salinized lands? Why do only a certain percentage of organisms die in a given population when exposed to a certain concentration of a toxic chemical?

Reference no: EM133405374

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