Eukaryotic mrna molecules may contain non-coding sequences that must be removed before translation. these are called a. anticodons. b. introns. c. exons. d. nucleosomes. e. noncodons

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.