Answer:
A selective pressure is any reason for organisms with certain phenotypes to have either a survival benefit or disadvantage.
Explanation:
 
        
             
        
        
        
The giant impact theory suggests<span> that the </span>Moon formed<span> out of the debris left over from a collision between Earth and an astronomical body the size of Mars. The theory describes the formation of the Moon. 
</span><span>Supporting evidence is that the Earth rotates. Correct answer: D</span>
        
                    
             
        
        
        
April is the <u>fourth month</u> of the year in the Gregorian calendar, the fifth in the early Ju.lian, the first of four months to have a length of 30 days, and the second of five months to have a length of less than 31 days.