While jessica, ashley, and bryan are snowboarding, they ignore warning signs indicating that they have left the marked trail and are entering dangerous territory where they become lost. while climbing the mountain as part of the rescue effort, a snowplow accidentally cuts a nearby town's main electrical cable. due to the loss of her electric heat, ethel, an elderly woman, dies of hypothermia. the boarders' negligence in ignoring the warning signs is: a. not the cause of ethel’s death. b. the proximate cause of ethel’s death. c. the causation in fact, but not the proximate cause, of ethel’s death. d. the superseding cause of ethel’s death.

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Which characteristic do healthy families have in common? a. having above average household income b. ignoring one another’s happiness c. demonstrating love for oneself d. communicating with one another

Which of the following best reflects what we know about how the flu virus moves between species? a) the flu virus in a pig is mutated and replicated in alternate arrangements so that humans who eat the pig products can be infected. b) a flu virus from a human epidemic or pandemic infects birds; the birds replicate the virus differently and then pass it back to humans. c) an influenza virus gains new sequences of dna from another virus, such as a herpesvirus; this enables it to be transmitted to a human host. d) an animal such as a pig is infected with more than one virus, genetic recombination occurs, the new virus mutates, the virus is passed to a new species such as a bird, and the virus mutates again and can now be transmitted to humans.