Similar rock formations have been discovered in the United States and Portugal. These rock formations were formed at the same time and are made of the same types of rocks. What could
explain how these rocks got so far apart?

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.

i think the answer is

mass

make   gliitsh plesea   !

the contamination

we are putting to many trash.