What do bacteria and giraffes have in common? they both reproduce by cloning. they are both made of one cell. they both grow and develop. they both need a mate to reproduce.

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.

Never seek shelter from a tornado: a. in a mobile home b. in a car or truck c. in a room with windows d. in any of the above

Second hand smoke can be almost as harmful as smoking. true or false?