Which of the following is an example of a ball and socket joint that allows extension, horizontal flexion, abduction, and rotation?
a. elbow
b. knee
c. shoulder
d. wrist

What component of fitt refers to the duration of a single workout?

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.

High blood pressure is a physical response to stress. select the best answer from the choices provided. от of