gizzard where it is digested
on the surface worms eat a variety of organic materials such as dead grass and leaves
The Anus
because it helps their digestive system
What goes in must come out. Digested decay matter and food. Good Fertilizer.
They are grown together, just like humans with their arms.
betel
You can find out if an earthworm eats soil by observing it in a controlled environment, such as a terrarium, with soil and other food sources. If you see the earthworm consuming soil by ingesting it and passing it through its digestive system, then it is likely consuming the soil. Additionally, the presence of soil particles or organic matter in the earthworm's waste (castings) can indicate that it is eating soil.
Koalas have a really long and complicated digestive system because they only eat Leaves( Eucalyptus Leaves mainly), and these leaves contain toxins which allows their digestive system to take a longer amount of time to break down the food and digest.
Koalas have a system that helps them digest the eculeptas leaves but we do not.
At the least this passage takes place via diffusion; introduce membranes and we find trans-spiration [from respire].
Eucalyptus leaves have all the nutrition required by a koala. Their digestive systems are specially adapted to their diet f eucalyptus leaves. Other foods would not be suitable for their digestive system.
Earthworms eat organic matter found in soil such as decomposing leaves, plant roots, and microorganisms. They ingest soil along with the organic matter and extract nutrients from it as they digest. You can observe earthworms in a controlled environment with soil and organic material to see if they consume the soil particles.