LS2-4 Which ecological principle does an energy pyramid illustrate? A. Large amounts of energy ate lost in the transfer between trophic levels B. The ultimate source of energy in the biosphere is the sun. C. Consumer organisms are more important than producer organisms. D. Most producer organisms use photosynthesis to create organic compounds.

coal is not sustainable because it will one day run out.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

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