1. Trace an atom of oxygen from the big bang through its cycling in the biospher
ID: 266885 • Letter: 1
Question
1. Trace an atom of oxygen from the big bang through its cycling in the biosphere.
2. How does the movement of species in the planet relate to population, community, ecosystem and evolutionary processes on earth?
3. Consider a species on Earth and discuss what would happen to it if it was transported to other planets that can support life. With what you know, consider how molecular, cellular, biological, and evolutionary changes would happen in planets with different atmosphere, gravity, elemental composition, magnetic field, and any other scenario you can think of, compared to Earth. Keep in mind that the rules of chemistry and physics still modify biological systems and their emergent properties.
Explanation / Answer
Big-bang theory is the theory of the origin of Earth. According to this theory, initial atmosphere is devoid oxygen. Initial atmosphere was having the methane gas, hydrogen gas. Oxygen came into the existence when cyanobacteria originate in the Earth. They release oxygen through the process of photosynthesis. The oxygen released as a by-product of photosynthesis. Hence, in this way oxygen is evolved. Further, oxygen is also evolved by plants and oxygen come in atmosphere. When a species move in the planet, its bio-diversity will increases. As, the species increases in number, its population, community will increase. The new species, will use the non-biotic resources present in the environment, which will help in the development of an eco-system. Further, resources of the population of that species will go to the selection by the evolutionary process.
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