Since carotenoids stabilize dangerous free radicals, we can assume that their function is to protect the cell from the free radicals.
If about 30% is A then 30% is T. That leaves 40% to be G + C...so each must be around 20%.
The sky is transparent not blue, it only appears to be blue because of the ocean. but in the night it appears to be dark grey. the sky being blue is considered as an optical illusion.
Answer:
6.c
8.c
I'm not sure about the rest.
