What can scientists infer about the period of very early Earth from the lack of fossilized remains of oxygen breathing animals and the dominance algae?
A)everything was underwater
B)the atmosphere lacked oxygen
C)only fish lived during that time
D)the dinosaurs used all the oxygen

The correct answer is B) the atmosphere lacked oxygen.

Explanation:

A is incorrect because not everything was underwater.C is incorrect because not only fish lived during the time. D is incorrect because dinosaurs could   not have used all the oxygen.

i have to report this, it doesn't relate to biology

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.