Is milk a biotic or abiotic factor?

Is milk a biotic or abiotic factor? Here are the things that have biotic features: bacteria, dead leaves, mosquitoes, milk, hair, plastic, and an empty snail shell. On the other hand, the things that have abiotic features include the following: temperature, wind, sunlight, sand, and ice.

Here are the things that have biotic features: bacteria, dead leaves, mosquitoes, milk, hair, plastic, and an empty snail shell. On the other hand, the things that have abiotic features include the following: temperature, wind, sunlight, sand, and ice.