How has Coronavirus impacted the U. S. and/or global community? Utilize online resources to provide two examples for three of the factors below. Please explain your answers in detailed complete sentences and cite sources used.
- Economic Impact
- Social Impact
- Environmental Impact
- Political Impact
- Cultural Impact
- Technological Impact
- Medical Impact

What is the difference in the phisical activity requirements for achieving healt benefits and performance?

[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.

Which example is a indication of stress a. becoming more alert b. narrowing air passages c. slowing down if the heartbeat d. decreasing blood sugar with adrenaline