D. sunlight.
Plants rely on the sun to give them the energy that they need for photosynthesis. All of the choices have something to do with photosynthesis but sunlight plays the main role in the process.
Answer:
amino acids
Explanation:
one of the bases or examples of proteins
a substance that has a ph level less than 7
D. Red, Orange, Yellow, Green, Blue, Indago, Violet.
Violet has the highest freqency and red has the lowest.
Hope this helped!
Nucleic acid would be responsible.
