Photosynthesis relies on a type of protein used in reactions, to break the water down into its base elements of hydrogen and oxygen.

Scientist have long study the earths climate by looking at which of the following? the earths orbit. the earths rock layers. the antarctic ice. the earths oceans.

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen