Acute diseases are sudden, severe, and short term only. They quickly appear and worsen without warning and they disappear. Examples of this are flu or colds.  
Chronic diseases, on the other hand, are long-developing diseases. The symptoms have been present for long time and it worsens as time progresses. Examples of this are Osteoporosis and heart disease.
        
             
        
        
        
Two important natural processes that release carbon into our atmosphere are photosynthesis and respiration.
 
        
                    
             
        
        
        
Answer:
A: Suited for their environment
Explanation:
You can automatically eliminate B and C, since they both say that animals with adaptations that won't work with their environment would have a higher survival rate. This doesn't make sense; adaptations that wouldn't suit an environment would actually lower the population's chances of reproduction and survival. 
That leads us to A and D. However, A would be the correct answer. Organisms with adaptations that suited their environment would help them (since it would make the organism more compatible with their environment), rather than having no change at all.
Hope this helped!
 
        
             
        
        
        
They are both alike because they both begin with a series of reactions known as glycolysis 
Cellular respiration needs oxygen and fermentation doesnt 
        
             
        
        
        
<span>The phospholipid bilayer is a thin polar membrane made of two layers of lipid molecules. ... Biological bilayers are usually composed of amphiphilicphospholipids that have a hydrophilic phosphate head and a hydrophobic tail consisting of two fatty acid chains.</span>