4steps from the big bang
34things can go into it
lung
ComponentPart
Lungs evolved in fish, before any animal walked on land. Some fish still gulp air.
First appearedAbout 400 million years ago
Made Of
Everything is made of something.← What it takes
What it leads to →
Made from
Goes into
Lungs evolved in fish, before any animal walked on land. Some fish still gulp air.
From the big bang to lung
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.
big bang13.8 bn yrs ago
Hhydrogen13.8 bn yrs ago
amino acidsdate unknown
proteinsc. 4.2 bn yrs ago
lungc. 400 m yrs ago