Kidneys (regulated by the pituitary gland released neurotransmitter ADH)
A ray maintains buoyancy through a combination of its flattened body shape and a specialized internal structure called the swim bladder. By regulating the amount of gas within its swim bladder, a ray can control its buoyancy level to help it stay afloat in the water column. Additionally, the large pectoral fins of a ray also play a role in providing lift and stability while swimming.
Because of the design of the internal trap
Because it provide's medium for many chemical reactions.
The madreporite is the structure that is part of an echinoderm's water vascular system. It acts as a sievelike structure that allows water to enter the system and is connected to the internal canals of the water vascular system.
Well it all depends ,, but usually it Contains waste products Stores water in plant cells Maintains internal hydrostatic pressure or turgor pressure.
When the body maintains a steady internal environment, that is called homeostasis.
In a Paramecium the contractile vacuole helps balance the water levels inside the cell by pushing out the excess water that leaked in.
it maintains water
water is 1/13.5 as dense as mercury.Therefore, since mercury maintains a height of 760 mm at sea level:760/13.5 = 10,260 mm, or 10.26 meters
Sodium.
The body's internal environment is maintained by homeostasis. The components that are regulated inside the body are temperature, pH level, water, ion and solute balance.
The body maintains homeostasis through regulation of external events that would impact internal affairs. Sweating, drinking water, breathing deeper are all example of external events impacting on internal reactions.