What is an example of a positive external shock to aggregate supply?

a. good weather leads to an unusually productive harvest for corn farmers.

b. a popular new diet encourages consumers to buy more corn flakes.

c. demand for new suburban houses increases the value of farmland.

d. china announces that it plans to import more corn from the united states.

Which information can be accessed through a patient portal? test results support groups insurance bills cost comparisons

[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 area of the brain controls the body's ability to fight off stress? question 1 options: synapse, frontal lobe, dendrite, sympathetic nervous system