Producers obtain energy from photosynthesis as they are the plants, bacteria, and algae that form the initial layer of energy transfer. Producers then transfer a percentage of energy to first tier consumers (herbivores/omnivores).
Because Cyanobacteria appeared
Cyanobacteria's excrement formed a lot of oxygen in the atmosphere which make the earth temperature cold
This allow a liquid water to formed on the surface ( because if the temperature is too high, the water will evaporate) and eventually formed oceans
It states that layers of sediment are originally deposited horizontally due to the effects of gravity.
