In your own words, explain how Earth's magnetic field is created and how it benefits human life.

gravity keeps is down so we dont float around in space

Explanation:

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on the website image. Gsfc. Nasa.gov they say the magnetic field of Earth is caused by currents of electricity that's low in the molten core these currents are hundreds of miles wide and flow 1000 of miles per hour as the Earth rotates the powerful magnetic field passes out through the core of the earth passes through the crust and Inner Space

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex