<span>An exercise session designed to promote weight loss should expend at least 250 calories as this is the lowest amount of calories that sufficiently constitute an appreciable quantity of fat and energy that the body has.</span>
        
             
        
        
        
Answer:
first one B second one A 
Explanation:
PLS MARK ME AS BRAINLYEST 
 
        
             
        
        
        
The main groups of unicellular organisms are bacteria<span>, </span>archaea<span>, </span>protozoa<span>, unicellular </span>algae<span>, and unicellular </span>fungi<span>. </span>
        
                    
             
        
        
        
Answer:
possible genotypes are - Rr Rr Rr Rr
Possible phenotypes - remember that R is dominant therefore all of the seeds with be round 
Explanation:
 
        
             
        
        
        
Answer:
C. Synthesis of organic molecules
Explanation:
According to chemical evolution theory, life originated from inorganic molecules by the mode of chemical evolution. In primitive conditions of earth, only inorganic molecules were present. These molecules reacted under lightning, UV radiation and other environmental conditions to give rise to complex organic molecules like amino acids, sugars, lipids etc. They formed the basis for proteins, RNA and other molecules which ultimately led to the formation of cellular structures.