The Origins of Life 0.0 / 5 ? BiologyHuman impact on the environmentGCSEAQA Created by: CurlotCreated on: 14-08-13 13:42 When do scientists think life first began? 3-4 Billion years ago 1 of 6 What can we use to evidence gases in the atmosphere? Plant Fossils 2 of 6 When did the dinosaurs die out? 65 Millions years ago 3 of 6 Fossils can only be made in certain conditions, they are very ? Specialised 4 of 6 What began to develop 4 million years ago? Two legged mammals 5 of 6 What was the concentration of CO2 in the atmosphere 4.5 billion years ago? 98% 6 of 6
Comments
No comments have yet been made