Mercury orbits the Sun at more than four times the speed of Saturn. true or false

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies?

What first caused people to consider that the continents were once one large landmass?

1. crust 1 the metallic layer at the earth's center 2. inner core 3 the firm layer between the crust and the asthenosphere 3. lower mantle 2 the layer surrounding the inner core 4. asthenosphere 4 the semi-solid layer between the top layer and the upper mantle 5. upper mantle 5 the layer between the asthenosphere and lower mantle 6. top layer 6 the earth's outermost layer 7. outer core 7 the hottest part of the mantle