What is one effect of immigration on a population living in an ecosystem

When a new species immigrates into an ecosystem, the competition for limited resources within the ecosystem increases. The new species tries to fit in the ecosystem by entering into the existing food chains and there by destabilizes the system by feeding on either the producers or the primary consumers. The new species may also cause harm to essential components of the ecosystem, thus it can be harmful as well.

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )