Yes lunar phases can and do follow a pattern and they can be predicated
 
        
             
        
        
        
Conservation would come out more effective when multiple groups cooperate to one common goal. Conservation is a big responsibility that can be made possible through the cooperation of many groups including the government, private organizations, and of course the people. 
        
             
        
        
        
<em>An impact of an asteroid strike</em><em> would be damage to the ozone layer. </em><em>The vitality bestowed to the atmosphere by </em><em>the approaching object would be sufficient to disturb the defensive layer of ozone high within the stratosphere.</em>
Glad to help ya!! :)
 
        
                    
             
        
        
        
Answer:
<h2>50 cM or more far apart
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Explanation:
1. The largest possible map distance is 50, it represents that  two genes are found at opposite ends of a chromosome or are 50 cM apart from each other or they are found on different chromosomes
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2. Genes found at opposite ends of a chromosome behave as if they are on different chromosomes.
3. As given A-B 50%, means  that recombination frequency is 50%.
The recombination frequency(RF), 50% means that either two genes are located on different chromosomes inheriting independently or  when they are widely separated on the same chromosome with far distance.  
4. As  given here, four genes named A, B, C,  and D are known to be located on the same chromosome. so A-B are 50 cM or more  far  apart from each other.