Here's a few: magnesium, oxygen, silicon, phosphate, and aluminum are all found in earth's crust in high proportion. oxygen being the highest proportion of any other element.
 
        
             
        
        
        
Cause earth orbits around the sun in a year and we have 24 hours in a day 
 
        
             
        
        
        
Living things contain four major types of carbon-based molecules. The organic molecules in living things fall into four major groups— carbohydrates, lipids, proteins, and nucleic acids. You may already be familiar with these types of molecules and their functions.
        
                    
             
        
        
        
The amount of CO2 absorbed by plants through photosynthesis is enormous plants have the ability to absorb and in turn sequester enormous amounts of carbon over a very long time much of the excess atmospheric CO2 is from the result of burning phonology fuels
        
             
        
        
        
Its called invasive species one example is the lion fish it rooms around the east cost of north America overpopulation harms the ecosystem