Answer:
A nucleotide is one of the structural components, or building blocks, of DNA and RNA. A nucleotide consists of a base (one of four chemicals: adenine, thymine, guanine, and cytosine) plus a molecule of sugar and one of phosphoric acid.
 
        
             
        
        
        
Answer: = <span>The phospholipid bilayer</span>
        
             
        
        
        
Answer:
1: Movement (muscle cells) 2: Conductivity (nerve cells) 3: Metabolic absorption (kidney and intestinal cells) 4: Secretion (mucous gland cells) 5: Excretion (all cells) 6: Respiration (all cells) 7: Reproduction (all cells) MedicTests.com.
Explanation:
 
        
             
        
        
        
A renewable nature source is solar energy and a nonreneable natural source is natural gas
        
             
        
        
        
Answer:
The poles
Explanation:
Because the air is thinner and more sun radiation.