Answer:
False 
Explanation:
Most scientists were not yet concerned about global warming. This was because the major issue during the period between 1940 and 1970 was global cooling with little or no attention on global warming.
However things started to change due to more pollution as a result of technological advances. Global warming started becoming a concern between 1970s and 1990s because of the increase in steady surface temperature.
 
        
             
        
        
        
Hydrogen
Iron
Aluminum 
Copper
Sodium 
Carbon
Silver
Mercury
Gold 
Lead 
........
        
             
        
        
        
Answer:
As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air. However, much of the shorter wavelength light is absorbed by the gas molecules.
Explanation:
 
        
                    
             
        
        
        
Answer:
mitochondria, ribosomes, and vacuoles
Explanation:
chloroplasts and cell walls are only found in plants . 
though rare, vacuoles are found in animal cells as well as plants .
mitochondria and ribosomes are in both types of cells .