The skin uses sweat to excrete water and urea.
A Euglena (like many other Potists i.e. Amobas and Parameciums) have a Contractile Vacuole which it uses to excrete excess water and remove wastes.
The skin,is the organ that uses sweat to excrete water,salts,and a small amount of urea
frog or earthworm
they use their anuses to eat
Finding uses for waste is important due to the amount of waste that accumulates each day. Uses for waste will decrease this accumulation, and help our atmosphere.
math uses the scientific method
glue for the space shuttle and used in a salve for horses lips
As most living organisms and cells excrete waste and toxins, there are many excretory systems and processes. For example, clams use a siphonic process for excreting metabolic waste while a cabbage uses aerobic respiration to excrete oxygen from stomata in its leaves.
In waste and recylcling
Plants do not excrete waste materials from their cells at all. Instead, plant cells possess an organelle (a cell sized organ) called a Central Vacuole in which the plant cell deposits all waste products from chemical processes within the cell. The central vacuole is filled with waste products until either the cell or the plant dies, it does not "excrete" any sort of waste. Alternately you can look at it this way: Sugar is one of the factors of plant waste. The plant stores that, and uses it for energy. Second is oxygen. Oxygen escapes by cells called guard cells. When the stomata (the space between the guard cells) gets full, the guard cells swell open and release extra water, and oxygen.
The setae, or hair-like projections from each segment, help the earthworm anchor into the soil when burrowing and moving through the dirt. Without the help of the setae, a worm would have a harder time gaining enough traction to pull itself forward.