WJEC GCSE Science (Double Award) 3430QD · 2.4(e)
Present atmosphere and how it has changed
- Code
- 2.4(e)
- In
- 2.4 The Ever-changing Earth
- Topic
- 2 Unit 2: Chemistry 1
- Course
- GCSE Science (Double Award) 3430QD
- Board
- WJEC
Codes and titles are read by a script from WJEC's published specification and have not been checked by a person. What each point covers is in the specification itself: WJEC’s specification.
Points in 2.4 The Ever-changing Earth
- 2.4(a) Structure of the Earth
- 2.4(b) Plate tectonics and continental drift
- 2.4(c) Processes at plate boundaries
- 2.4(d) Formation of the early atmosphere
- 2.4(e) Present atmosphere and how it has changed
- 2.4(f) Maintaining atmospheric oxygen and carbon dioxide
- 2.4(g) Effects of carbon dioxide and sulfur dioxide emissions
- 2.4(h) Tackling global warming and acid rain
- 2.4(i) The air as a source of nitrogen, oxygen, neon and argon
- 2.4(j) The tests used to identify oxygen gas and carbon dioxide gas