<span>DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.</span>
        
             
        
        
        
Answer:
a. option :both have mammary glands is the correct answer right no
 
        
             
        
        
        
Answer:
All multicellular organisms use cell division for growth and the maintenance and repair of cells and tissues. Cell division is tightly regulated because the occasional failure of regulation can have life-threatening consequences.
 
        
             
        
        
        
Answer:Ais the answer 
Explanation:
I passed biology last year and that’s something I remember 
 
        
             
        
        
        
The correct answer is FALSE. 
It is false that the only factions which disagree with each other is economists and environmentalists.
 Economists are referred to as practitioners which are found in the social science and their work is to discipline economics. 
A person can develop, study and apply some concepts and theories from economic.
Environmentalists are termed as supporters who supports the movement of the environment. 
There is a ethical movement of the movement or political which works to protect and improve quality of environment which is natural.
Environmentalist believes in environmentalism philosophy.