Answer:
Hydrogen sulfide or methane
They use methane as an energy source
 
        
             
        
        
        
The only answer that is not an example of a cell specialization is : 
<span>Bacteria cells are small in size in order to easily diffuse in and out of the cytoplasm. 
All of the other examples, the muscle, nerve and the rod and cone cells have specific cell structures, shapes, and proteins that enable them to execute their specific roles in the organism. </span>
        
             
        
        
        
Answer:
Explanation below 
Explanation:
It should be understood that the population growth rate of a particular country can be explained or described as the increase in the number of the citizens of that country. 
There are so many factors that contribute to an increase in the number of people of a country. These include influx of people into the country, increase in birth rate and decrease in death or mortality rate. 
In this case, the growth rate is usually calculated in percentage, so the growth rate should be around 3.5%.
 
        
             
        
        
        
The process of photosynthesis occurs when green plants use the energy of light to convert carbon dioxide (CO2) and water (H2O) into carbohydrates. Light energy is absorbed by chlorophyll, a photosynthetic pigment of the plant, while air containing carbon dioxide and oxygen enters the plant through the leaf stomata.
        
             
        
        
        
Some individuals in the rabbit population must evolve traits that improve their survival chances