| Hint | Answer |
|---|
| what rock is continental crust made from? | |
| is continental crust mafic or felsic? | |
| did lava rich in iron, magnesium and calcium erupt early or late from a magma body? | |
| did lava rich in sodium, potassium and silica erupt early or late from a magma body? | |
| percent composition of oxygen of the modern atmosphere (use numerals) | |
| term for the process by which water molecules split by UV radiation in upper atmosphere | |
| the process that was volumetrically more significant in oxygen build up | |
| organic structures formed by trapping sediment on bacterial mats | |
| formations that consist of cherts and iron rich layers and indicate presence of oxygen in the atmosphere | |
| these released iron at mid ocean ridges | |
| at 4.4 billion years ago, this mineral had a stable oxygen isotope ratios | |
| the release of a gas that was dissolved, trapped, frozen, absorbed or adsorbed in some material | |
| type of meteorite with water | |
| the organism that was found in the oldest fossil | |
| flawed experiment that simulated the conditions on early earth | |
| bacteria that live in rocks | |
| single celled microorganisms | |
| an organism that thrives in extremely hot environments | |
| oldest fossils are from this location in Australia | |
| microscopic algal fossils used for correlation | |
| this type of fauna contained soft bodies animals in complex forms (discoidal, frondlike) | |
| where are the oldest life forms in canada found? | |
Periodic Table
Planets from the Sun
Digits of Pi
