Earthquakes it occur because of they occur when their used tectonic plates it shifted to suddenly. Hope it helped you, and have a great day.
-Charlie
Answer:
They are not violent killers because they need their host to stay alive for their benefit And if the host dies the parasite wont have a host so they try to keep it alive for as long as possible.
Explanation:
There is no answer ,you wrote the answers with the question
They all go through a rotation in which one needs another
