The Dorsal Spines give the fish, "3 Spined Stickleback", because they have hard, spines on their backs. I hope this helps!!!
        
                    
             
        
        
        
Answer:
B
Explanation:
Mass is constant. Weight varies due to gravity.
For example, On earth you weigh 75kg but on Jupiter you weigh 275kg (not accurate). Your weight has varied. However your mass is the same on both planets.
 
        
             
        
        
        
<h2>                          
¡Hola Emma!</h2>
Answer:
¡<u>Si</u>!
Explanation:
El peróxido de hidrógeno es inestable y se descompone lentamente en presencia de luz.
<h3>¡Adiós, que tengas un buen día!</h3>
 
        
        
        
Answer:
Biogeographic isolation is the separation of organisms of a species through geographical or biological forces. 
Explanation:
 
        
             
        
        
        
Breast milk provides antibodies to fight diseases.   
Breast milk is produced by mammary glands in the breasts and its main function is feeding an infant. Breast milk is the primary source of nutrition for newborns. The composition of the milk includes immune-boosting white blood cells, as well as stem cells, which can help organs develop, antibodies, proteins, amino-acids, oligosaccharides, growth factors, hormones, enzymes, vitamins, minerals…