You are presented with the question "What uses Earth 's magnetic patterns to find locations?" and the following answer choices: 
- pigeons
 - cats
 - rats
 - elephants
 - Bats
 - salmon
 - birds
 - humans

Now knowing that earth 's magnetic patterns are used for finding locations by animals that migrate and bird Migration and Isotopes Tracking animal migration is a difficult task, choose the best answer.


 

       birds  