5steps from the big bang
1things can go into it
apple
MaterialFood
An apple floats because about a quarter of it is air.
First appearedDate not yet known
An apple floats because about a quarter of it is air.
An apple floats because about a quarter of it is air.
The most direct chain from the start of the universe, following what things are made from and, for living things, what they evolved from. Each step shows when it first appeared.