The sun feeds the plants through the process of photosynthesis. the animals gain energy and grow by eating those plants. other animals eat those animals and gain energy and grow. the cycle is never ending and all begins with the sun. without it, the plants and animals wouldnt get food and die off.
        
             
        
        
        
I believe it's the the decrease of owls and if i' wrong sorry 
 
        
                    
             
        
        
        
It is an example of uneasiness. It is because being anxious is a way of having to be worried to a specific thing or problem in which when a particular person is worried, he or she is likely feeling anxious as he or she seeks for something that will relieve his or her worries.
        
                    
             
        
        
        
Answer:
Seawater is a complex mixture of 96.5 percent water, 2.5 percent salts, and smaller amounts of other substances, including dissolved inorganic and organic materials, particulates, and a few atmospheric gases, so it would affect the water negatively. 
 
        
             
        
        
        
Answer:
Brachial vein. 
Explanation:
Veins may be defined as the blood vessels that carries the blood towards the heart. The main function of the vein is to carry the deoxygenated blood into the heart.
Brachial vein is the deep veins that has the name as their arteries occupy. The brachial veins receive their blood from the palmar veins with the interosseous vein. The brachial veins include the ulnar vein, radial vein in upper limb and lower limb consists of popliteal veins. 
Thus, the answer is brachial veins.