Answer: Plant because they survive by water and sunlight.
Explanation:
A
theta wave is a type of brain wave associated with sleep spindles.
<span>
Theta
waves are involved in daydreaming and sleep and also connected to experiencing
and feeling deep and raw emotions. Those waves have benefits because can help
in improving our intuition and creativity.</span>
If I'm right I'd say They control and direct the quantity of food passing through the digestive organs and prevent backward movement of partially digested food. Hope it's helpful.