To learn how Earth's atmosphere has changed over time, sientists study air bubbles in which of the following?
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A. rocks contianning uranium
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B. ice cores
c. fossils in sedimentary rock
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D. pollen
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Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

If water were a non polar molecule, how would its properties be different ? a.) water would be a much lighter molecule b.) water would be able to climb up inside plants c.)water would not be able to form hydrogen bonds d.) water would stick together much more strongly

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis