List the 2 Sources of Energy for Living Organisms.

The Sun is a source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

i thinking chemical change