Here's a breakdown:

* Biotic factors are all the living or once-living organisms that influence an ecosystem.

* Living organisms: These include plants, animals, fungi, bacteria, and even viruses.

* Once-living organisms: This encompasses things like dead leaves, decaying wood, and animal waste.

Examples of biotic factors:

* Plants: providing food and oxygen

* Animals: consuming plants and other animals, acting as predators or prey

* Bacteria: breaking down dead organisms, recycling nutrients

* Fungi: decomposing organic matter, forming symbiotic relationships with plants

* Dead leaves: providing nutrients and shelter for decomposers

In contrast, abiotic factors are the non-living components of an environment, such as:

* Temperature

* Sunlight

* Water

* Soil

* Minerals

Together, biotic and abiotic factors create the complex web of interactions that define any ecosystem.