What observations can geologists make by working outdoors instead of in the lab ?

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.

amber has allowed scientists to study dna that has been preserved over millions of years.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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