Order these events from oldest (1) to most recent (4). Dense melted material sank to form the core. Earth’s gravity captured gases to form the first atmosphere. Dust, rock, and ice were pulled together by gravity. Less dense material cooled, hardened, and formed the crust.
Dense melted material sank to form the core.:2
Earth’s gravity captured gases to form the first atmosphere.:4
Dust, rock, and ice were pulled together by gravity.:1
Less dense material cooled, hardened, and formed the crust.:3