Answer:
D. They form an ionic compound.
Explanation:
The bonds which are produced between a metal ion and a non-metal ion are termed as ionic bonds.
 
        
             
        
        
        
Answer:
The start codon is AUG
Explanation:
A three nucleotide sequence (represented with bases) of a DNA or a RNA which translates to a specific amino acid is referred to as codon. To begin the translation into a new protein, the first three nucleotide is always AUG (called the START codon) which is the codon for methionine.
NOTE: AUG is the initial of the bases; Adenine, Uracil and Guanine
 
        
             
        
        
        
Answer:
Predatory kills their prey on the spot. Parastic keeps the host alive and feeds off of thier body over a long period of time, until they are too weak to stay alive.
Explanation:
 
        
                    
             
        
        
        
Answer:
A. a developing nation
Explanation:
Age pyramids are the age structure diagrams that represent the number and proportion of people at each age in a population. The base of the age pyramids represents the population in pre-reproductive age which is from 0 to 10 years. The overall shape of an age pyramid indicates if the population is increasing, stationary, or shrinking. 
The age structure diagram for a developing nation has a broad base that tapers quickly towards the top. This means that a larger percentage of the population is in the pre-reproductive age group and reproductive age group with a smaller percentage of the population in the post-reproductive age. These countries have a great chance of future population growth. 
 
        
             
        
        
        
Answer:
finds the cows with a lump on his neck