Which feature helps to maximize the volume of gases exchanged during internal expiration?

According to ainsworth's research, in a new situation such as beginning child care placement, which children will be most likely to go to their mother for comfort when she returns? a. disorganized-disoriented b. insecure-ambivalent c. insecure-avoidant d. securely attached

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.

Which a hammer strikes a compound formed by covalent bounds