It takes 3 half-lives:
1. 1000 -> 500
2. 500 -> 250
3. 250 ->125
I'm not sure about the Virginia thing so good luck!
And congratulations on being my first answer-person!!
Cheese I'm so sorry for not having an answer I failed you
D - tertiary consumer
This is because it is the farther up to food chain.
I think disproved geocentric theory proved that planetary orbits are elleptical
