Solar panels, windmills, hydro energy
        
             
        
        
        
Answer:
These are the basic steps of urine formation.
Explanation:
The first step comprises creating a filtrate in the glomerulus. 
During the second stage, the filtrate flows through the tubules, and useful substances are reabsorbed. 
Waste products will then be secreted by the tubules. 
Whereas, the final stage is the conservation of water that occurs in the renal tubule.
There are four major stages in the formation of urine.
 
        
             
        
        
        
Explanation:
Hormone production and release are primarily controlled by negative feedback. In negative feedback systems, a stimulus causes the release of a substance whose effects then inhibit further release. In this way, the concentration of hormones in blood is maintained within a narrow range.
 
        
             
        
        
        
<span>Positive Homans'
 medical Definition of Homans' sign. : pain in the calf of the leg upon dorsiflexion of the foot with the leg extended that is diagnostic of thrombosis in the deep veins of the area.</span>