"In the first digestive reaction of starch, a disaccharide called maltose is produced. Maltose consists of two glucose molecules joined together. In humans, the production of maltose from starch occurs within the mouth in a reaction catalyzed by amylase, an enzyme found in human saliva.". I looked it up
        
             
        
        
        
Answer:
B
Explanation:
because their structures become more complex. Such as the human brain, over time we get more knowledge. 
 
        
             
        
        
        
Answer:
A. Mendel observed green and yellow pea pods in a 3:1 ratio because the F1 generation was heterozygous.
Explanation:
The two true breeding plants in the parental population were homozygous (that is what true breeding means). Therefore, their cross would lead to all heterozygous offspring (see attached punnet square). Green is the dominant characteristic, so all F1 plants had a green phenotype, but Gg genotype. 
The F1 cross would therefore be Gg x Gg. See attached punnet square.
The genotypes in the F2 generation are 1 GG: 2 Gg: 1 gg 1
Therefore, the phenotypic ratio is 3 green pea pods (Gg or GG): 1 yellow (gg)
 
        
             
        
        
        
Much more because you have a weather nation over the other.