Biotic factors are the living components of an ecosystem.
Examples of biotic factors in the rabbit ecosystem are food (plants), access to mates, and competition with other organisms for food sources.
Rabbits have a huge effect on biotic factors because they are known to consume a lot of the food in an area (especially as their population rapidly increases due to fast reproduction cycles). Because of this, they are a successful competitor and limit the amount of food available to other organisms in the area.
Rabbits also eat plants at crucial stages of their development. This means that crops and native plants can be affected before they have been able to reach maturity, limiting the life cycle of those plants (and their potential usefulness to the ecosystem).
Abiotic factors are the nonliving components of an ecosystem.
Examples of abiotic factors in the rabbit ecosystem are water, space to spread out, and temperature.
Rabbits affect the abiotic factors in the environment by populating quickly. This can mean that they 'overtake' an area and do not have enough space to exist comfortably with adequate resources.
Excessive grazing on plants (biotic factors) by rabbits can also lead to soil erosion (abiotic factor), which in turn can affect water quality.
Sources:
Agriculture Australia, https://agriculture.vic.gov.au/biosecurity/pest-animals/priority-pest-animals/european-rabbit, accessed November 2023
National Museum of Australia, https://www.nma.gov.au/defining-moments/resources/rabbits-introduced, accessed November 2023