Answer:The excretory system is a close partner with both the circulatory and endocrine system. The circulatory system connection is obvious. Blood that circulates through the body passes through one of the two kidneys. Urea, uric acid, and water are removed from the blood and most of the water is put back into the system.
Explanation:
Answer:
In the oxygen found in the molecules in the bonds between the atoms as chemical energy
The Correct Answer is: D. 1,2,4
Answer:
D fleas affect all animals
