Here's a breakdown of the nitrogenous bases found in RNA and DNA:

DNA (Deoxyribonucleic Acid)

* Adenine (A): Pairs with Thymine (T)

* Guanine (G): Pairs with Cytosine (C)

* Cytosine (C): Pairs with Guanine (G)

* Thymine (T): Pairs with Adenine (A)

RNA (Ribonucleic Acid)

* Adenine (A): Pairs with Uracil (U)

* Guanine (G): Pairs with Cytosine (C)

* Cytosine (C): Pairs with Guanine (G)

* Uracil (U): Pairs with Adenine (A)

Key Differences

* Thymine vs. Uracil: DNA uses thymine, while RNA uses uracil. This is a key difference between the two nucleic acids.

Let me know if you have any more questions!