What are the 7 characteristics of life?

What are the 7 chemical characteristics of life?

When did the sun ignite?

When did the LHB occur

Effects on Earth

What occurred during the Hadean period?

What occurred during the Archaean period?

What evolved during the Proterozoic period? (3)

What evidence exists for panspermia?

What did the Miller-Urey experiment hope to achieve?

What was the Miller-Urey experiment? (4)

What were the products?

What issues are associated with the primordial soup?

Conditions in Black Smokers (3)

Redox reaction on iron pyrite, releasing H2S

What is the main flaw of this theory?

What improvement was provided as an alternative to this theory?

What problem still exists with this theory?

What is serpentination? (3)

Energy production in Alkali vents

Why are alkali vents considered valid cradles of life? (5)