I not sure but i think it is 4
Bauxite is considered an ore because of its hardness and it can be used as a metal.
The arctic fox is an incredibly hardy animal that can survive frigid Arctic temperatures as low as –58°F in the treeless lands where it makes its home. It has furry soles, short ears, and a short muzzle—all-important adaptations to the chilly clime. Arctic foxes live in burrows, and in a blizzard they may tunnel into the snow to create shelter.
The structure labeled X in the diagram is a membrane protein.
Drive less, accelerate slowly, drive until your tank is empty, avoid excessive idling, eliminate wind resistance.