Answer:
False.
Explanation:
Classification of organism is important to classify them in similar and different groups. Organisms can be classified on the basis of the development of the mouth or the anus first. 
The organism in which mouth develops first by the opening of gastrula are called protostome not deuterostomes. Deuterostome develop anus first from the opening of gastrula.
Thus, the correct answer is option (b).
 
        
             
        
        
        
One word answer is Mutation nothing is perfect but some bacteria also have changes from conjugation aka sex between bacteria even though they are asexual organisms
        
             
        
        
        
Answer:
d
Explanation:
the situation which would be least likely for a scientist to revise our experimental method would be if results are the same after defeating the procedure. 
 
        
             
        
        
        
The moon does not create its own light, but the sun reflects light of the moon so depending on where the sun sits (which it is always moving) causes the different phases or appearances to the moons shape
        
                    
             
        
        
        
answer:
our sun will never become a neutron star. 
explanation:
- neutron stars are born from suns that are 10-20 times the size of ours. 
- in 5 billion years our sun will become a red giant and then eventually a cold white dwarf which is similar to a neutron star, just much larger and much less dense.