Most successful parasites, such as a cat flea, weaken their host but do not kill it. Why is killing its host usually disadvantageous for a parasite? Question 4 options:

Relatives of the host would then attack the parasites.

Lysosomes from the host would then attack the parasite.

If a parasite kills its host, it will then have to find a new host in order to survive.

Parasitism is a relationship where both organisms benefit; killing the host is not beneficial to the host.

Ithink the dna sequences may vary but the amino acid sequences are identical. 

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.