DNA and RNA are made of what 3 part structure? 1)nucleotide
2)codon
3)amino acid
4)nucleic acid

Biomass can be used to generate electricity. biomass relies heavily on agricultural crops. plants release carbon dioxide and water in combustion. plants use photosynthesis to originally generate the energy that is needed. the chemical energy of these plants all started with what energy source?

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?