Answer:
About 100 times more than other planets.
Explanation:
The Sun would be about 100 times bigger than the earth planet in the scaled-down model of the solar system because in the reality the size of sun is 109 times more than the earth so making a model more perfect and nearer to reality we have to maintain the diameter of the sun more than 100 times than the earth and other planets.
 
        
             
        
        
        
He wouldn’t have an increase in melatonin because it promotes sleep activity
        
                    
             
        
        
        
You can check how fast your heart is beating.
        
             
        
        
        
Answer:
If the producers would be removed in the food web, then the whole ecosystem would fall down and die.
Explanation:
The reason why producers are important in a food chain is because they provide food for the herbivore animals, and then, the carnivore animals kill and eat the herbivore ones, and whatever is left, is eaten by the decomposers. So, if we remove the root of the tree (producers), then can the tree(rest of food web) survive?  The simple answer is NO.
So, Hence, the ecosystem won't be able to last long, all animals will die.