More biology questions, please help!?

birds retain many replilian features, including


a.teeth


b.a long bony tail


*c.scales on their feet and lower legs


d.none of the above





bony fishes : stronger muscle ::


a.bony fishes : lungs


b.sharks : bony skeleton


c.sharks : ray fins


*d.sharks : rows of teeth





the world record time for running the mile is just under four minutes. how might this record be different if humans had air sacs like birds do? explain your reasoning.





to help control a species of scale insect that feeds on orange trees, a scientist proposes introducing a parasitic wasp from australia. you are asked to help evaluate the proposal. what are some of the biological issues that you should consider before making your decision? what non-biological issues might you consider?





11.AIDS patients often succumb to infection or cancers that are rare in healthy individuals...true or false?...true, idk.





12.a person with type AB blooc can donate to a person with any blood type...true or false?


true?





thank

More biology questions, please help!?
1. C


2. dont know


3. it would be longer because humans would be able to store more air internally and their insides would be hollower


4. well, what happens when the wasps start taking over?


11. right because a normal immune system prevents a lot of infections from affecting people but aids patients don't have that ability


12. FALSE. a person with O is an international donor. a person with AB is an international recipient.
Reply:1) d -- it is about the bones in their hips!!


2) don't get the question


3) never studied bird anatomy, sorry


4) chnages in biodiversity as a long term effect


that only scale inscets are eaten etc...


5) false - very common ones - like colds!


6) true - i am AB!
Reply:1. C scales


2. I don't like any of these! Analogies just suck.


3. The record for running a mile might be less time, with those air sacs. Having these might increase the efficiency with which oxygen could get to the muscles, would would increase the aerobic efficiency of the muscles. The muscles would complete aerobic respiration, leading to less production of lactic acid, which would mean less fatigue.


4.


a) Would the parasitic wasp feed on something other than the scale insects? Would it become a pest in its own right? What if a native bird ate the parasitic wasp... and the wasp was poisonous to it?


b) What of its nesting habits? If the wasp chews up houses to make paper for its nests, that would not be good!


11. True


12. False.



my dog