Answer:
Crossing over ensures that organisms of the same parents have differences in genetic content making them unique in one way or the other. 
Explanation:
This question is describing the process of crossing over, which occurs only during prophase I of meiosis. During the process of crossing over, alleles of a gene are exchanged between non-sister chromatids of homologous chromosomes (mother and father chromosomes). 
Hence, a unique GAMETE that has been genetically recombined will be formed. When these gametes are fertilized (egg) or fertilizes (sperm), organisms that are genetically different from their parents are produced. This ensures genetic variation, which is a difference in the genetic content of organisms. 
 
        
             
        
        
        
False. They form a V formation so that it will lower their heart rate and make it easier to go longer distances. And when they are in a V formation, it results in wind resistance. 
        
             
        
        
        
The A antibodies will produce A antibodies and the B antibodies will produce B antibodies
        
             
        
        
        
they are called
pseudopodia 
hope it helped :)
 
        
                    
             
        
        
        
Answer:
Explanation:
Matter can change form through physical and chemical changes, but through any of these changes matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.