Answer:
D) Room temperature
Explanation:
For the experiment to work and have good reliable results there should only be one variable. In this case, the variable is the noise level, and the different room temperatures would influence the experiment's results.
 
        
             
        
        
        
Answer:
b
Explanation:
Surely Job satisfaction is directly related to task performance. The better your task is done better will be your self esteem and self confident
 
        
             
        
        
        
<span>Economic rivalry among sellers for the consumers' dollars is called competition. Your welcome, I have researched this topic.</span>
        
             
        
        
        
Answer:
Enzymes
Explanation:
The enzymes in the stomach protect it.
 
        
             
        
        
        
Answer:
The economy of Africa consists of the trade, industry, agriculture, and human resources of the continent. As of 2019, approximately 1.3 billion people[1] were living in 54 countries in Africa. Africa is a resource-rich continent.[3][4] Recent growth has been due to growth in sales in commodities, services, and manufacturing.[5] West Africa, East Africa, Central Africa and Southern Africa in particular, are expected to reach a combined