Explanation:
A protein is a linear molecule comprised of amino acids.The sequence of a protein's amino acids is determined by the sequence of bases in the DNA coding for the synthesis of this protein.
 
        
             
        
        
        
I believe the answer would be A, because if water didn’t exist, there would be no presence of living things on earth. Water is a resource for life, thus, presence of living things.
        
                    
             
        
        
        
Answer:
"theory of evolution by natural selection,”
this was proposed by charles darwin and alfred wallace in the 19th century
 
        
             
        
        
        
Answer:
Even in the desert, there is water vapor in the air—molecules of water in the gas phase. These molecules have a lot of freedom of movement and can move apart from each other, so water vapor is invisible.
Explanation:
 
        
                    
             
        
        
        
Answer:
The statement "Movement of oxygen among the atmosphere, land, oceans, and even living things make up the WATER CYCLE." is correct.
Explanation:
The water cycle shows the path with which water evaporates out of the surface of the earth, into the atmosphere, where it cools and condenses into rain or snow in clouds, and drops back to the surface in the form of precipitation.
The 4 major route of the water cycle is Precipitation, Evaporation, Condensation, and Transpiration.
The water cycle promotes the accessibility to water for all living organisms and controls weather patterns on earth.