Answer:
1) Our Earth's iron liquid outer core rotating around the solid inner core
Explanation:
The earth's magnetic field or the geomagnetic field is produced as a result of the earth's iron liquid outer core rotating around the solid inner core.
This produces the earth's magnetic field.
- The earth's core is made up of solid and liquid region.
- Only the densest elements are found within this region.
- So, the core is made up of metals which are mainly iron and nickel.
- The outer core is liquid or molten iron and the inner core is solid.
- The molten iron and nickel in the outer core moves around the inner core and generates the currents which induces a magnetic field round the earth.
Solar energy will not run out (unless the sun burns out), but the supply of fossil fuels we use is slowly depleting. Burning fossil fuel also releases greenhouse gas into the air, which is bad for the atmosphere.
Answer:its a chemixal change because there are stuff getting mixed togehter making it a chemiacl change
Explanation:
