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.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

gold i'm pretty sure i might be wrong