Idk the timeline but from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.
        
             
        
        
        
Birds
Birds are organisms which utilize a one-way air flow through their lungs to maximize air flow efficiency and <span>oxygen consumption
</span>The process of respiration is essential in the oxygen/carbon dioxide cycle. Respiration removes OXYGEN <span>from the atmosphere and produces and releases </span>CARBON DIOXIDE to the atmosphere.answer is letter D.
<span>Respiration driven by a mechanical series called inhalation and exhalation. We inhale or breathe in oxygen and exhale or breathe out carbon dioxide. </span>
        
             
        
        
        
The dominant RR (red) and recessive rr (white). The color pink seems to be an intermediary between the dominant and recessive parent. Thus a heterozygote (Rr) that contains both a dominant and recessive gene will have a pink color. 
 
        
                    
             
        
        
        
1) plants 
2) sugar
3) all 
4) sugar and oxygen 
5) not putting fertilizer on the soil 
6) glucose