Answer:
Which environmental factor would cause the greatest decrease in the number of species of plants and animals living in some of the lakes in the United States is acid rain
1:15 is the ratio of radioactive parent isotope to stable daughter isotope,
after four half-lives of decay.
Let:
- 'A' be the initial concentration of the radioactive parent isotope
- 'n' be the number of corresponding half-lives
- 'A/2ⁿ ' be the final concentration of the radioactive parent isotope
Using the Exponential Decay Relation:
A → A/2ⁿ ( after 'n' half-lives )
A⁴ → A/2⁴
A⁴ → A/16
∵The final concentration of the radioactive parent isotope is A/16.
∴The initial concentration of the stable daughter isotope will be 15A/16.
1:15 is the ratio of radioactive parent isotope to stable daughter isotope,
after four half-lives of decay.
Learn more about questions on Radioactive decay:
brainly.com/question/15575933
Answer:Diarrhea
Explanation:
Influenza is a type of viral infection. It is commonly described as flu. Its symptoms are usually worse than normal cold.
Most of the symptoms of flu are not observed during the starting few days and one may transfer it to another person before knowing about it.
The main symptoms of flu includes headache, dry cough, muscular aches. It does not includes diarrhea.
Xylem transports and stores water and water-soluble nutrients.
Phloem transports sugars, proteins, and other organic molecules.
