The ultimate source of energy (for most ecosystems) is the sun<span>. The ultimate fate of energy in ecosystems is for it to be lost as heat. Energy and nutrients are passed from organism to organism through the food chain as one organism eats another.</span>
        
             
        
        
        
Answer: it shortened the name and easier to remember 
Explanation:
 
        
                    
             
        
        
        
Answer:
ATP gives free energy that the cell can use for energy using processes in the cell
Explanation:
sometimes ATP is necessary for the transportation of nutrients in the human body. ATP gives the cells energy to do for example endocytosis or exocytosis. (actively absorbing nutrients or emitting nutrients)
 
        
             
        
        
        
Speciation is the adaptive divergence and gradual that leads to two different species.
Reproductive isolation results in speciation when the processes of evolutionary mechanisms, physiological and behaviours are collected.
Mechanism of reproductive isolation helps in preventing members of different species from producing offsprings. A zoologist is a classified way of reproductive isolation whereby it(zoologist) is classified to the mechanism of reproductive isolation into two categories
(i)                  Pre-zygotic. This one acts before fertilization or before mating when it comes to animals.
(ii)                Post-zygotic. It acts after fertilization.
The mechanisms appear I species which are genetically controlled and whose geographic distribution overlaps or are separated.
 
        
             
        
        
        
Yes I do we have about 71% of the world is water and from that water 96.5 is ocean water and about 4% is fresh water it is mostly found in Glaciers <span />