Out Of the following choices given, the best soil for gardening will be a soil that is 10 percent sand, and 80 percent clay. The correct answer will be A. 
        
                    
             
        
        
        
Answer:
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The answer for the above question is Natural selection. 
 According to natural selection organisms or individuals that are better adapted to their environment are more likely to survive and reproduce passing their traits on to their offspring, while those that are less adapted tend to be eliminated fro the ecosystem.. Diversity is the different species of organisms in the same area. 
        
             
        
        
        
Answer:
Classical conditioning
Explanation:
Classical conditioning or Pavlovian conditioning is conducted on living organisms to make them associate one or more actions to a given (often familiar) stimulus or stimuli. Ivan Pavlov, in his experiment, trained a dog to associate an action, salivating for food, with the sound of a metronome.