phase 1 early atmosphere

• What was the earths surface covered in over 4 billion years ago?

  volcanoes
• What did volcanoes release lots of to form the atmosphere?

  gas
• What planets was earths early atmosphere similar to?

  mars and venus
• what gases did volcanic activity build up in the atmosphere?

  nitrogen, water vapour and small amounts of methane and ammonia
• There was no oxygen in the early atmosphere