Yes.
It grows on its own because all the minerals in it
Grass,Lumber,Stones,Fish,And Minerals
Carabao grass is also known as buffalo grass. It has different mineral and nutritional content. It has calcium, phosphorus, potassium, sodium, magnesium, manganese, zinc, and copper.
Some of the abiotic factors that effect grass growth are minerals, water, carbon dioxide, and many others. Without these and other nutrients, grass will die, and your lawn will look bad.
Everything is part of the food chain. Even some minerals can be eaten, like salt.
Barley grass is high in calcium, iron, all essential amino acids, vitamin C, the flavonoids, vitamin B12, and a number of enzymes and minerals. (Alternative Medicine Encyclopedia)
I would say a little of both. The consistensy of what grass is made of doesn't change,it enlarges, so it could be called a physical change. But to grow, the grass absorbes water and minerals and does photosynthesis, and creates large molecules, so this could be called chemical.
The resultant fossil would either be referred to as permineralized, where the original pores spaces were infilled with minerals, or petrified, where the original organic matter was replaced with minerals.
They drink milk but at a later age, they eat grass, hay and grain with added vitamins and minerals or just plain grain.
Grass is neither. Grass uses photosynthesis. It is a plant.
Horses generally eat grass which is found on the ground. They will however dig for food and water or strip bark off of trees if they can't find any grass. They will also lick rocks and soil to ingest minerals, salt, and some vitamins.