Why is crediting Watson & Crick with the discovery of the structure of DNA a controversy in science?

the role of the microscope world in creating new materials .

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.