lesser 
Explanation:
Reykjavik the capital city of Iceland heats its buildings using geothermal energy sources at a cost that is lesser of what it would be if oil were  used. 
In all ramification, the use of geothermal energy sources is far more preferable and better than using fossil fuels like oil. 
- Geothermal energy is energy from within the earth 
- It is natural and renewable source of energy. 
- The cost of product is very low
- It has little to no impact on the environment as well. 
- They are usually found where magma pockets are close to the surface
learn more: 
Renewable source of energy brainly.com/question/2948717
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Answer:
c 
Explanation:
Gas is our largest issue, therefore that would be the most reliable answer.
 
        
             
        
        
        
Answer:
Un elemento químico es un tipo de materia constituida por átomos de la misma clase. En su forma más simple, posee un número determinado de protones en su núcleo haciéndolo pertenecer a una categoría única clasificada por su número atómico, aun cuando este pueda desplegar distintas masas atómicas.
Explanation:
 
        
             
        
        
        
The beginning of the Eocene Epoch Era.
        
             
        
        
        
Answer:
Usually by age 18 is when you’re body fully developed.
Explanation: