Hey there! 
We need to find a common denominator. 
5*3= 15
4/5= 12/15
2/3= 10/15
12+10=22
22/15
or 
1 7/15
I hope this helps!
~kaikers
 
        
                    
             
        
        
        
Yes, because it would be like shoving something into a crowed place, rather than shoving something into a uncrowded place.<span />
        
             
        
        
        
Answer: D. Epinephrine 
Explanation:
During perceived danger the fight-or-flight response includes faster heart beat, quickened breath, tense muscles and thought speed up. This co-ordinated set if physiological changes is triggered by two hormones of the adrenal gland, epinephrine and norepinephrine.
The major activities of these hormones is to increase the amount of chemical energy available for immediate use, increase the heart rate and stroke volume and dilate the bronchioles in the lungs, action the raise the rate of oxygen delivery to the cell.
Answer is epinephrine 
 
        
             
        
        
        
<h2>Scientist Observing changes </h2>
If the population of the species is significantly decreasing then the species could become extinct. The decline in population is due to some factors like less immigration, aging, and decreasing fertility rates. But the most is due to less immigration which causes to decrease population. The extinction of population can be prevented by some serious actions which should be taken government.
 
        
        
        
There will be less young organisms and way more older ones - this will put the population into decline