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

Author Question: What is the optimal level of fluoride in water? (Read 317 times)

leo leo

  • Hero Member
  • *****
  • Posts: 566

What is the optimal level of fluoride in water?


◦ 0.1-0.6 ppm
◦ 0.7-1.2 ppm
◦ 1.5-2.0 ppm
◦ 2.5-3.2 ppm


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by leo leo on May 15, 2019

patma1981

  • Sr. Member
  • ****
  • Posts: 292
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 39% of students answer this correctly



leo leo

  • Hero Member
  • *****
  • Posts: 566
Excellent



patma1981

  • Sr. Member
  • ****
  • Posts: 292
Great! Please up vote :D



 

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

For a complete list of videos, visit our video library