It is B. Because you cannot give internal fertilization/ live birth inside.
        
                    
             
        
        
        
Answer:
The correct answer is- IgA
Explanation:
There are five types or class of antibodies found in the human body these are IgA, IgM, IgD, IgE, and IgG. Out of these five class IgA antibody is found in an abundant amount in the mother's milk or colostrum.
Infant take this antibody from the mother through breastfeeding which protects the infant from may pathogenic microbes. The immunity in which antibodies are taken from outside is called passive immunity.
Therefore the passive immunity source that is given by the mother to baby through breast milk is called IgA.
 
        
             
        
        
        
The answer is C since heterotroph means they don't have a way of making food
 
        
                    
             
        
        
        
Answer: Pulmonary artery 
Explanation:
All arteries carry blood away from the heart while all veins carry blood to the heart. With the exception of pulmonary artery, all arteries contain oxygenated blood while all veins except pulmonary vein contain deoxygenated blood. 
Thus, pulmonary artery is the answer 
 
        
             
        
        
        
Warm water<span> has more energy than cold </span>water, which means that molecules in warm water<span> move </span>faster<span> than molecules in cold </span>water<span>. The </span>food coloring<span> you add to the </span>water<span> is pushed around by the </span>water<span> molecules.
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