Unicellular organisms excrete waste by a contractile vacuole. A vacuole is membrane-enveloped organelle in a cell that is found in lots of microorganism. It expands, filling with water then contracts, removing all of its contents to the exterior of the cell.
Answer:
The digestive system works very closely with the circulatory system to get the absorbed nutrients distributed through your body. ... While the digestive system collects and removes undigested solids, the excretory system filters compounds from the blood stream and collects them in urine.
Answer:
They are 3 in numbers
Explanation:
which are the airway, the lungs, and the muscles of respiration
Answer:
the last one because
Explanation:
matter is not created or destroyed so everything that you put in the solution will make up the mass
C. Transmits the signal toward the next neuron
