Lions and tigers competing for an antelope.
A: Anisotropy ; Angstrom ; Astrophysics
T: Terrestrial (planet[s]) ; telescope ; tectonics
(if that's what you meant)
☺
two strands of DNA are held together by weak hydrogen bonds.
Nitrogen Containing Base. It can be either Adenine, Guanine, Thymine, Cytosine, Uracil
