Primary succession occurs in essentially lifeless areas while secondary succession happens where there were previous communities
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:
Skin muscle etc.yk look it up too :()
Answer:
The first and 2nd pictures basically capture what they look like.
