Question

[GT.01] The chart below shows some events in Earth's history and the primary sources of information which were examined to date the events.

Earth event millipede appears land mammals appear rodents appear insects appear
Primary source of information fossil atmospheric gases history books green plants

Which of these Earth events was dated using the most valid and reliable source of information? (1 point)
Question 4 options:

1) millipede appears

2) land mammals appear

3) rodents appear

4) insects appear