origins of the earth 🌎

Question 1

what are the properties of life?

Answer 1

• consist of cells
• have different levels of cellular organisation
• use energy
• respond ton their environment
• grow
• reproduce
• adapt to their environment (short and long term)

Question 2

what is the 2nd law of thermodynamics?

Answer 2

• entropy is a measure of disorder and disorder always increases
• BUT biological systems organise and maintain themselves, they grow and reproduce
• 2nd law is still true though as death means entropy wins

Question 3

how did life start on earth?

Answer 3

it started with simple organic molecules and then more complex molecules (proteins ect) then into cells then are able to reproduce then came the development of complex biological pathways

Question 4

what is the life timeline?

Answer 4

big bang - 13.8 billion years ago
‘earth’ formation - 4.6 billion years ago
‘earth and moon’ system formed- 4.5 billion years ago
photosynthesis - 3.5 billion years ago
development of multicellular life

Question 5

what is the primordial soup theory?

Answer 5

the organic molecules forming oxygen-less world- triggered by UV light
simple gasses mixed in an environment thought to mirror earth

Question 6

what is the drake equation?

Answer 6

its an equation with lots of different things things required for life

Question 7

what is the fermi paradox?

Answer 7

its a question asking ‘where is all the life?’