There are many lines of evidence which clearly show that the atmospheric CO2<span>increase is caused by humans.  The clearest of these is simple accounting - humans are emitting CO2 at a rate twice as fast as the atmospheric increase (natural sinks are absorbing the other half).  There is no question whatsoever that the CO2 increase is human-caused.  This is settled science.</span>
        
             
        
        
        
Answer:
The decline rate ranges from 2.7 to 3.79
 
        
                    
             
        
        
        
Answer:
Plants perform photosynthesis and cellular respiration.
Explanation:
- Cellular respiration is the conversion of glucose into ATP and energy yielding molecules such as NADH and FADH2 along with water and oxygen and carbon dioxide as by-products. 
- Cellular respiration is a process that occurs both in autotrophs and heterotrophs. 
- Only the final stage of cellular respiration i.e. oxidative phosphorylation or electron transport chain requires oxygen as the final electron acceptor.
- Heterotrophic cells don't take in carbondioxide, they utilize glucose obtained through food.
 
        
                    
             
        
        
        
Answer:
submarine mountain ranges called oceanic spreading ridges.
Explanation:
 
        
                    
             
        
        
        
Answer:
The answer is Carotid Murmur.
Explanation:
The carotid murmur is the presence of an abnormal noise that is heard with the stethoscope placed on the lateral wall of the patient's neck, almost always due to a stenosis of the carotid artery; that is to say, there is a narrowing in the lumen of the vessel, decreasing the amount of blood that goes to the face, head and brain. This narrowness of the vessel is presented by the accumulation of plaques within the arteries (arteriosclerosis).