Answer: Ribose nucleotides and the nitrogenous bases
Explanation: RNA consists of ribose nucleotides (nitrogenous bases appended to a ribose sugar) attached by phosphodiester bonds, forming strands of varying lengths. The nitrogenous bases in RNA are adenine, guanine, cytosine, and uracil, which replaces thymine in DNA.
Testable, possible explanation for a scientific problem
Carbon
Carbon is a part of rocks and fossil fuels like oil, coal, and natural gas etc...
Nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
~Hello There!~
The missing words are circle - shaped chromosome.
Hope This Helps You!
Good Luck :)
Have A Great Day ^_^
- Hannah ❤