Which of the following is TRUE about stress?

A. Stress is only produced by externally imposed factors and is always negative.
B. Stress is a mental and physical response to real or perceived changes and challenges.
C. It is possible to eliminate all stressors in our lives if we try hard enough.
D. Stress does not affect a person's general health.

Which statement is most correct about self esteem?

What would be good in a cpr and first aid video

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.