Sample Clues
The comet-shaped magnetosphere that surrounds the Earth is shaped by the stream of plasma known as this
wind
The Mohorovicic discontinuity separates the Earth's crust from this
the mantle
This layer extends down from the surface of the Earth about 30 miles beneath the continents
the crust
An analysis of seawater shows that about 78% of the total solids are this one mineral
salt