The correct answer is - cyanobacteria.
The atmospheric oxygen came from the cyanobacteria. These were one of the earliest living organisms on Earth. The cyanobacteria was using photosynthesis in order to create its own food. The photosynthesis process requires sunlight, carbon dioxide, water, and oxygen. The oxygen is mostly released as a waste product from the process of photosynthesis, thus the cyanobacteria were literally releasing oxygen that was ending up into the atmosphere. As more and more cyanobacteria there were across the planet, more and more oxygen they were releasing into the atmosphere, slowly changing the composition of the atmosphere, and setting the basis of it as we know it now.
Order these phases |, |||, and ||
It becomes a metamorphic rock, hence the name. Its "metamorphosis" is brought on by the heat and pressure.
Answer:
1. Purity is light. Not just an ordinary light, but a transcendental light.
2. The greatest gift you can give another is the purity of your attention.
3. Purity lives and derives its life solely from the Spirit of God.
4. Purity and simplicity are the two wings with which man soars above the earth and all temporary nature.
The cycle takes about about 29.5 days.
