If the earth had twice its present mass, its orbital period around the sun (at our present distance from the sun) would be If the earth had twice its present mass, its orbital period around the sun (at our present distance from the sun) would be 2–√ years. 1 year. 12√ year. 12 year.

the plateau is likely to turn into a desert do to corrosion.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

there are no correct statementd on the list of choices you provided.

b.a device that inputs heat into a cool object