Select all of the answers that apply.

Cyanobacteria are thought to have introduced oxygen into the early atmosphere. This was important because oxygen played a key role in____.

the evolution of eukaryotic organism
the water cycle
creating an ozone layer to shield life from UV rays
the greenhouse effect
recycling of essential materials

Question

Select all of the answers that apply.

Cyanobacteria are thought to have introduced oxygen into the early atmosphere. This was important because oxygen played a key role in____.

the evolution of eukaryotic organism
the water cycle
creating an ozone layer to shield life from UV rays
the greenhouse effect
recycling of essential materials

anonymous · Answer

@oOKawaiiOo

anonymous · Answer

@4Jesus

anonymous · Answer

@sumanta

shadeyghost · Answer

around this time, eukaryotic organisms needed oxygen to start thriving, and they needed something to protect them

shadeyghost · Answer

can you get the answer from that?

anonymous · Answer

no

shadeyghost · Answer

what is sheilding us from the UV rays

anonymous · Answer

eukaryotic cells need oxygen to thrive so thats one and what do plants need to survive

anonymous · Answer

i mean what do plants need to survive in a green house