Which of the following is an advantage of biomass as an energy source? A. It is a renewable resource
B. It produces no greenhouse gases
C. It produces a great deal of energy from very little material
D. It is more efficient than the use of fossil fuels

There are four nitrogenous bases that make up dna. the two pyramidines are thymine and cytosine. the two purines are adenine and guanine. these bases pair in a very specific way. adenine - thymineguanine - cytosine i remember it like this: a tall, good cat.

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