Given the task definition and input, reply with output. Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.

Paragraph- Sent 1: Earths magnetic field helps protect Earth and its organisms.
Sent 2: It protects us from harmful particles given off by the sun.
Sent 3: Most of the particles are attracted to the north and south magnetic poles.
Sent 4: This is where Earths magnetic field is strongest.
Sent 5: This is also where relatively few organisms live.
Sent 6: Another benefit of Earths magnetic field is its use for navigation.
Sent 7: People use compasses to detect Earths magnetic north pole.
Sent 8: Knowing this helps them tell direction.
Sent 9: Many animals have natural 'compasses' that work just as well.
Sent 10: Birds like the garden warbler in Figure 1.36 use Earths magnetic field.
Sent 11: They use it to guide their annual migrations.
Sent 12: Recent research suggests that warblers and other migrating birds have structures in their eyes.
Sent 13: These structures let them see Earths magnetic field as a visual pattern. 
Question: Is Earths magnetic field strongest in the East and West, or the North and South?.

North and Soutn.