Answer:
fewer in number. 
Explanation:
A low sperm count also known as oligospermia can be defined as a medical condition which typically involves a man (adult male) having fewer than 15 million sperm per millilitre of semen. 
Basically, low sperm count (oligospermia) is usually caused in men due to health and lifestyle factors such as smoking, alcohol or drug abuse, obesity, genetics, sexually transmitted infections (STIs), age etc. 
Hence, smokers, alcohol abusers, overweight and obesity men are more likely to have sperm which are fewer in number i.e fewer than 15 million sperm per millilitre of semen.
Generally, a healthy or normal sperm motility ranges from over 20 million to 200 million sperm per millilitre of semen.
 
        
             
        
        
        
Answer: Lipids.
Explanation:
The large carbon -hydrogen bonds(C-H) in chains of lipids makes them ideal storage of energy. 
T<u>he more C-H bonds breakage, the higher protons availability from Citric acid cycle NADH and FADH2  and hydrogen atom splitting (to protons and electrons) for  the electron transport chains (ETC</u>), and therefore the higher proton pumps for  more ATP's synthesis in the mitochondria matrix.  
In addition large number of electrons  surrounding carbon atom in fatty acids than other food molecule is added factor.  The transfer of these electrons to oxygen during oxidation of fatty acids releases large amount of energy (9 kilo calorie) into the cells,  more than other food substances  
 
        
             
        
        
        
Answer:
the difference is that its bigger
Explanation:
its bigger because birds are much smaller than mammals and they dont have as big as bones like mammals 
 
        
             
        
        
        
<span>The biggest difference between photosynthesis and respiration is that photosynthesis only occurs in plants and some bacteria while respiration occurs in all living organisms. They do share one big similarity and that is that the process of photosynthesis is actually the same process only it is completed in reverse.</span>
        
             
        
        
        
A manifestation of local blood flow regulation.