hydrocarbon deposit
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nonrenewable energy
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nonrenewable fuel source
In genetics, gene expression is the most fundamental level at which the genotype gives rise to the phenotype, i.e. observable trait. ... Such phenotypes are often expressed by the synthesis of proteins that control the organism's structure and development, or that act as enzymes catalyzing specific metabolic pathways.
D... i took science last year
I suggest that you should try C......
