Answer:
Oxygen (O2) concerntration
Temperature 
pH 
 
        
                    
             
        
        
        
Answer:
Una libélula pertenece a la familia Anisoptera y está en el orden Odonata. Es un insecto que se encuentra alrededor de estanques, arroyos y ríos.
Explanation: Bienvenido
 
        
             
        
        
        
Answer:
0 just count all the atoms
by their color
Explanation:
 
        
                    
             
        
        
        
The two methods that helped the revivalists of the Great Awakenings increase people’s participation were camp meetings and prayers during work hours.
<h3>Who are revivalists?</h3>
Revivalists are individuals that promotes and conducts religious revival meetings.
In order to increase the participation of the people the following activities where encouraged:
- Camp meetings: This is where individuals are being gathered and taught the gospel. Prayers are equally carried out during this meeting.
- Prayers during work hours: The revivalist uses this opportunity to engage the working class citizens.
Therefore, the two methods that helped the revivalists of the Great Awakenings increase people’s participation were camp meetings and prayers during work hours.
Learn more about revival here:
brainly.com/question/509505
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The answer for the first one is c. That's all I know.