How does earths solid inner core affect seismic waves

The earth solid inner core does not affect the seismic waves, it helps to transmit all types of waves which is generated by the earthquakes. It is the only primary waves that are being passed through all mediums, the secondary waves do not pass through the medium and it gets reflected. The seismic waves pass faster through the inner core.

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

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