Earth’s magnetic field can make a magnet out of an iron bar by causing the magnetic domains to a. move back and forth between the north and south poles. b. create magnetic field lines. c. change the magnetic declination. d. line up in the same direction.

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?

When ash and dust begin to settle on the ground, they eventually become compacted by