Answer:
B
Explanation:
As the moon rotates around the Earth the angle of light given off from the sun changes. 
 
        
             
        
        
        
Answer:
Decrease in available living space 
Explanation:
If there is no living space left there will be a decrease in the amount of organisms that can live there 
 
        
             
        
        
        
Answer: Hi.... I hope it helps!!
Skin Pigmentation in humans
 
Explanation: Polygenic inheritance- It is simply a single characteristic which is controlled by more than two genes.  Human skin's color is determined by the amount of dark pigment it has which is melanin
. Minimum four genes are involved in the melanin production.
It is a case of continuous variation as the combination of melanin producing allele are responsible for degree of pigmentation
 
        
             
        
        
        
Diploid sporophytic generation alternating with haploid gametophytic generation <span>phrases characterizes alternation of generation in algae.</span>