Which of the following is considered a human- caused disaster?

In caring for a 27-year-old male who has a large laceration on his anterior forearm, you have noticed that your pressure dressing has become saturated with blood. Which of the following should you do next?

A) Remove the saturated dressings and apply a large trauma dressing. B) Apply an ice pack over the original dressing. C) Apply additional dressing material over the top of the original dressing and bandage it in place. D) Apply a tourniquet.

Which one of the following best describes hazardous materials?

A) Dangerous chemicals B) Substances that are poisonous to human beings C) Substances that pose unreasonable risk to health, safety, and property D) Any substances transported by rail or highway in large quantities