Answer:
The three elements that make up over 99 percent of organic molecules are carbon, hydrogen and oxygen.
Explanation:
 
        
             
        
        
        
A) transports oxygen and carbon dioxide for the respiratory system
        
             
        
        
        
Yogurt can stay good after 2 hrs of being in room temperature.
        
             
        
        
        
Answer:
g
Explanation:
its g because thats right may i have brainlyist i need it to upgrade 
 
        
             
        
        
        
The urban areas are more likely to have smog than the rural areas. 
Urban area can be referred to as the town or city with advances an developments. Since the urban areas have more population density, more electronic items, vehicles and also industries, that is the reason why they are more likely to produce the smog or any other form of pollution.
Smog is a type of air pollution formed dye to the combination of smoke and fog. The most common source of smog is the burning of coal. This can be either due to industries or the fuels of vehicles. Fog can be of two types: Photochemical smog and industrial smog.
To know more about smog, here
brainly.com/question/15728274
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