.A parasite species lives in or on a host species.?

1.A parasite species lives in or on a host species. In this interaction:  
   A. both species are negatively effected  
  B. one species is negatively effected while the other is unaffected  
C.   one species is negatively effected while the other is positively effected  
  D. both species are positively effected  

2.A predator species feeds on a prey species. In this interaction:  
 A.   both species are negatively effected  
B.   one species is negatively effected while the other is unaffected  
 C.  one species is positively effected while the other is negatively effected  
 D.  both species are positively effected  

3.Two species may compete for a shared resource. In this interaction:  
 A.   both species are negatively effected  
 B.  one species is negatively effected while the other is unaffected  
 C.  one species is negatively effected while the other is positively effected  
  D. both species are positively effected  

4.The _____ principle states that if two species have very similar niches then only one species can exist and the other dies out.  
  A.  resource partitioning  
  B. competitive exclusion  
 C.  symbiosis  
 D.  all of the above  


5.In an evolutionary process called _____, species evolve differeneces in what they eat or where they feed such that coexistence is possible.  
  A.  resource partitioning  
 B.  competitive exclusion  
C.   symbiosis  
D.   all of the above