A those traits are more beneficial for survival in a niche
It couldn't be analysed chemically because it's chemical composition is to complex. It would be hard for us to analyse them because once it has been removed from the organism, it ends as protoplasm only.
Answer:
The true statement is: The Sun's energy passes through the atmosphere without warming it significantly.
Neither, humans don't have an estrous cycle, instead the females have a menstrual cycle.
