Organic matter could mean a lot of things. When we stick to the scientific definition, there are compounds that contain the elements hydrocarbons. Most of these compounds are found in living things. However, when used in this example, organic matter is used to feed living things. Thus, this means that organic matter means food.
For an in-text citation, you would need the author's name and the page number. For example... <span>Romantic poetry is characterized by the "spontaneous overflow of powerful feelings" (Wordsworth 263).</span>
Copying and pasting from an Internet article on pets
