Hi lovely,
Are you able to provide your answer choices?
        
                    
             
        
        
        
epistatic gene
Explanation:
Some genes mask the expression of other genes just as a fully dominant allele masks the expression of its recessive counterpart. A gene that masks the phenotypic effect of another gene is called an epistatic gene; the gene it subordinates is the hypostatic gene.
 
        
             
        
        
        
Answer:
B.Plants
Explanation:
They are considered as autotrophs because they manufacture their own food and have the highest amount of energy. 
 
        
             
        
        
        
Answer:
The distance between them is changing at the speed of 10.16 m/hr
Explanation:
Consider the sketch attached below.
The question is simply asking to calculate the resultant of the two velocities.
To get the angle between them, we simply use the coordinates of the two vectors to determine the angle between them.  
90 + 45 = 135°
from the cosine rule we have 
 =
 =  +
 +  - 2abcosθ
 - 2abcosθ
 =
 =  +
 + - 2 ×6×5×cos 135
 - 2 ×6×5×cos 135
 = 103.426
 = 103.426
c = 
c = 10.17 m/hr