I NEED HELPP 3. Ravi decides to eliminate just 100 calories per day from his diet. He knows that each pound of body fat equals 3500 calories. How long will it take for Ravi to lose 10 pounds?

35 days

1,000 days

350 days

10 days

Witch system has the main function of the body defense

What is one reason that informed consent is important for patients? a. patients have complete access to health care with informed consent. b. patients can make the best decisions with adequate information. c. informed consent brings the cost of health care down significantly. d. informed consent leaves a written record of the patient's consent.

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine.what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.