TLE - Early life on earth

A Level Environmental Science revision

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Last updated: May 24, 2025

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First submitted	May 24, 2025
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Average score	97.9%
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Hint	Answer
Conditions	Atmosphere
Conditions	Insolation
Conditions	Distance from the sun
Conditions	Orbital behaviour
Conditions	Magnetosphere
The atmosphere provides...	Gaseous resources
The atmosphere maintains...	Liquid water
Insolation factors	Albedo
Insolation factors	Greenhouse effect
Orbital behaviour prevents...	Extreme heating or cooling
Temperature importance	Range of tolerance
Cause of magnetosphere (5 words)	Molten iron and nickel core
Magnetosphere importance	Deflects solar winds
Define solar winds	Charged particles released by the sun
Water is a X where X takes place	Physiological solvent, biochemical reactions
Environmental changes	Oxygen
Environmental changes	Ozone
Environmental changes	Carbon sequestration
Environmental changes	BGC
Environmental changes	Transpiration
First oxygen was released by X to X	Photosynthetic bacteria, oceans
First oxygen was converted to	Iron oxide
Sequestration caused...	Lower temperature
BGC importance	Recycles molecules
Transpiration importance	Rainfall
Limitations of past monitoring	Lack of data
Limitations of past monitoring	Lack of collaboration
Limitations of past monitoring	Lack of sophisticated equipment
Limitations of past monitoring	Inability to measure
Limitations of past monitoring	Reliance on proxy data
Limitations of past monitoring	Reliability of proxy data
Improved methods	Long-term data sets
Improved methods	Electronic monitoring
Improved methods	Computer models
Improved methods	Carriers
Improved methods	Gas analysis
Improved methods	Isotope analysis
Carrier types	Satellites
Carrier types	Research aircraft
Carrier types	Helium balloons
Satellite types	GRACE
Satellite types	Altimetry
Oxygen isotopes estimate...	Temperature
Oxygen isotope ratio measured	O18:O16
Carbon isotopes estimate...	Date
Carbon isotope ratio measured	C12:C14
Mg:Ca ration measured in...	Calcite deposits
How Mg:Ca estimates temperatures (7 words)	More Mg is incorporated at higher temperatures

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