Eutrophication occurs due to the increased concentration of natural nutrients. Conversely, artificial eutrophication happens due to human activities.
<h3>Eutrophication and artificial eutrophication</h3>
Eutrophication is a biological phenomenon that occurs due to the increased concentration of natural nutrients such as algae in a water body. 
Artificial eutrophication is a specific type of eutrophication process caused by human activities.
Artificial eutrophication can be caused, for example, for an excessive overload of fertilizers in a lake.
Learn more about eutrophication here:
brainly.com/question/8499582
 
        
             
        
        
        
Answer:
True
Explanation:
Tetrodotoxin is the molecules that act as a poison to the organism in which they are injected.
The tetrodotoxin proves lethal to the organisms as it kills the organism by interfering with the nervous system. The tetrodotoxin blocks the sodium channels in the neuron as a result of which the sodium is unable to enter the neurons and hence the electrical impulse is not generated.
If the tetrodotoxin blocks the motor neuron transmission by blocking the sodium channels then the signals will not reach the muscle and muscle will not be able to contract.
Thus, true is correct.
 
        
             
        
        
        
When under the influence of alcohol, muscle COORDINATION is slow and errors are made in interpreting speed. Muscle coordination refers to the complex coordinated movement of muscles with little conscious efforts. This ability is always drastically reduced in individuals who are driving after taking alcohol.
        
             
        
        
        
Oxygen is a compound , phosphorus and nitrogen , and reservoirs
        
                    
             
        
        
        
The human foot has two arches, but the chimpanzee foot has only one.