Answer:
No, the other student’s stance can’t be scientifically supported. The only studies in this field have been conducted in a laboratory. There’s no direct observation of the sweetener’s effect on aquatic ecosystems. There’s only a possibility of a threat. There’s not enough information to draw a conclusion of its effect on aquatic ecosystems at this point.
Explanation:
 
        
             
        
        
        
Answer:
Sagittarius A* ( D.) is the name of the black hole region that creates the gravitational force holding the Milky Way together. 
 
        
                    
             
        
        
        
Edwin Chadwick was the man that studied the relationships between poverty and disease in England and proposed a 'sanitary idea' to control disease.
<h3>Who was 
Edwin Chadwick?</h3>
He was an English social reformer who is noted for his leadership in reforming the Poor Laws in England and instituting major reforms in urban sanitation and public health.
He was famous for having devised the legislation that dragged British sanitary science out of the dark ages and into the light of modern times. 
In England, he was able to improve public health as he concluded that three main things were needed to improve health: refuse removal , an effective sewage system and clean running water in every house and a qualified medical officer appointed in each area.
Read more about Edwin Chadwick
brainly.com/question/15924695
#SPJ1
 
        
             
        
        
        
<span>failed to win a majority of the electoral vote</span>
        
                    
             
        
        
        
British Empire, overseas territories linked to Great Britain in a variety of constitutional relationships, established over a period of three centuries. The establishment of the empire resulted primarily from commercial and political motives and emigration movements (seeimperialism); its long endurance resulted from British command of the seas and preeminence in international commerce, and from the flexibility of British rule. At its height in the late 19th and early 20th cent., the empire included territories on all continents, comprising about one quarter of the world's population and area.