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CPR should be initiated when the victim does not have a pulse, but is breathing normally.

_________________ pressure is increased pressure in an artery with each contraction of the ventricles.

What symptom does OPQRST help a rescuer to assess?

How might an evolutionary biologist explain why a species of salamander becomes blind after colonizing a cave?

Which of the following statements, regarding the process of science, is true? 

Which of the following is an objective finding?

What should you do after a primary survey in which you did NOT determine that a potentially catastrophic injury was present?

Echinacea is an herbal supplement that is often used an over-the-counter cold remedy. A team of scientists decided to investigate its effectiveness. They hypothesized that echinacea reduces the effect of the common cold on the body because it boosts the ability of the immune system to fight off the virus. The images below report the experimental design and the results. Based on this information, choose the best conclusion for the study from the provided options.

An objective finding that can be seen, heard, felt, smelled, or measured

Dr. Thistle wanted to test Dr. Garnet’s experiment but could only access a single tree with emerald ash borer infestation. Dr. Thistle injects the tree with the insecticide and then determines the percent of larvae killed. Dr. Thistle then reintroduces the emerald ash borer to the tree and repeats the experiment 49 more times. Is this experimental design valid?