How might a change in the strength of Earth’s magnetic field impact life on Earth?

  i don`t know that much but

Explanation:   if the  magnetic  field of the  earth is decreasing year by year at one point it would be so weak that everything on earth would float here and there. the ocean of the earth would also float and as the ocean is one third of the earth the most of the earth would be covered in just floating water.

as a camel goes without food, its hump begins to shrink. its fur prevents the camel from sweating too much.camels store fat in their humps, not water.