The Precambrian is the earliest era. It is followed by the Paleozoic, when multi-cellular life first flourished on earth After that came the Mesozoic - 'middle life' - the era before the current one which is the Cenozoic. Note that the Paleozoic, Mesozoic and Cenozoic are all part of the Phanerozoic Eon.
If this is a true or false question i would say true
The answer is B, the luminosities and distances can both be different
Aquatic biomes are located in
Lakes
Ponds
Rivers
Seas
Oceans
Estuaries
Coral reefs
Wetlands
Mangroves
Intertidal zones
I had to do a project about this a few years ago. Hope this helps