Left auricle and left ventricle
        
             
        
        
        
Answer:
Halting the use of resources is impractical. Increasing the mining efforts would lead to further depletion of resources. Hence, the correct options are: build dams, use cars that emit fewer harmful gases, and halt the runoff of factory waste into rivers and streams which would positively affect Earth's resources.
Explanation:
 
        
             
        
        
        
Answer:
Nonrenewable Resources take longer to be replenished, reneweable resources are easily replenished and easily accessible. 
Explanation:
If something is Nonrenewable; for example fossil fuels like coal, oil, and natural gas, then that means that the organic matter is limited and not going to grow or be created easily on Earth. 
Renewable Resources are usually classified into five categories; Hydro, Solar, Wind, Biomass, and Geothermal. All of these resources are easily accesible and can be used as a natural energy source. 
Hope this helped :)