In rna molecules adenine is complementary to

protist eukaryotes that are not plants, animals, or fungi ("misfits")

im not intirely sure but i think the anwser is d relative humidity

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.