A single species that has evolved into several different forms that live in different ways has undergone "b. convergent evolution" since the multiple "divergent" species are seen to "converge" into a single species if you go back far enough in time. 
        
                    
             
        
        
        
Answer:
(C) The main predator of these fish is another species of fish on which alligators also prey.
Explanation:
The ecosystems are complex systems, and removing one species of them, always has a chain reaction and affects the population of the other species, be it in a positive or negative manner. In this case, the alligators prey upon fish, multiple different species. The alligators though have been removed from the ecosystem, thus the apex predator exists no more. This has opened up the top predator niche in the food chain in this particular ecosystem. The predatory fish species had no predators of its own, so its population increased, thus it needed more food, and that food was obtained by hunting the other fish species, resulting in a decline in the population of the other species of fish. Only when the carrying capacity is reached in the ecosystem for the predatory fish, the population of the other fish will stop declining.
 
        
             
        
        
        
Answer:
An enzyme refers to a kind of protein found inside a cell. The enzymes result in the chemical reactions within the body. The function to accelerate the rate of chemical reaction in order to support life. The enzymes in the body assist in performing very essential functions. These comprise eradicating toxins, building muscle, and dissociating particles of food at the time of digestion.  
Enzymes are needed for performing the proper function of the digestive system. Digestive enzymes are primarily produced in the stomach, pancreas, and small intestine. However, even salivary glands generate digestive enzymes in order to dissociate the molecules of food at the time of chewing.  
There are three prime kinds of digestive enzymes, which are classified on the basis of the reactions they catalyze. These are protease, amylase, and lipase.  
 
        
                    
             
        
        
        
Within the cell's endoplasmic reticulum, the proteins are packed into membranebound sacks called lyosomes?
        
                    
             
        
        
        
Answer:
A corridor that is attached or connected to a large patch.
Explanation:
Corridors in biology can either be within an aquatic or terrestrial environment. The movement of animals is mostly between these two corridors, or corridors within the main ones. Because corridors are very long and continuous strips of land or water with much vegetation or reefs, there are numerous amounts of species. These corridors are meant to aid movement of animals, so it is only natural that there would be a large amount of them at the end of a corridor.