<span>Watson and Crick determined the base pairing by using the new information to construct a new double-stranded helix model with the nitrogen bases paired A to T and C to G in the center. This base pairing immediately suggested to Crick that one side of the molecule could serve as a template to exactly replicate DNA sequences to pass on genetic information during cell reproduction. This second, successful model was unveiled in February 1951.</span>
Microwaves Vs Infrared Rays
Microwaves have a shorter wavelength than Infrared Rays
(That makes A false)
Infrared Rays have a lower frequency than Microwaves
(This makes B true)
Microwaves have more energy than Infrared Rays
(Therefore C is false)
No waves have the same frequency
(Which means D is false)
Hope this helps!
Google images, I'm guessing.
Definite article is used before a noun (person place or thing) to indicate that the identity of the noun is known to the reader.
indefinite article is used before a noun that is general or when its identity is not known.
