Answer:
prey and predator
Explanation:
The predator-prey relationship is one of the most common examples of coevolution. In this regard, the predator have adaptations that enable them to capture and feed on their prey. These include many have sharp claws and canine teeth, many are able to run fast and many have a body colour which matches that of the surroundings. There is an increased prey on the prey to avoid being captured by the predator and thus evolved traits to help them camouflage better. 
 
        
             
        
        
        
I'm not sure, but I think the answer might be false, because I'm pretty sure you can feel if someone or something is pressing down on your leg or arm.
 
        
             
        
        
        
From the options B is not part of the study of science is : ( B ) The ethics of new developments 
Analyzing the evidence gotten from an experimental or research study is a core part of science because that way the scientist can determine if the results obtained are close to the predicted hypothesis or outcome. 
Science involves the study of the natural world because all scientific experiments and researches are carried out by studying real life ( natural world ) as study cases.   while the ethics of new developments is not controlled or determined  by  the scientist 
Hence we can conclude that the ethics of new developments are not part of the study of science 
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