7m + 19 would be the simplified answer
Hope this helps
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Answer:
If there would be no biosphere on earth the atmosphere would be quite different. There would be no oxygen to support because oxygen is liberated by plants in photosynthesis so no plants means no oxygen. The earth would be a planet without life just like Venus and Mars. Therefore, no organism would be surviving in the world.
There would be no negligible green house effect and global warming since it is all created due to activities of men.The earth's atmosphere would be much cleaner and with lesser amount of CO2 and O2 but no organism would be there to use them.
Hope it help!
Vestigial structures. These are structural elements that once served a purpose but as the organism evolved now serves no purpose.
It would be their equivalent of winter. The lower half of the Earth would be tilted away from the sun, and so it would be colder
