Why would scientists use a control sample that has no dna from bighead carp in edna surveillance? a. to amplify the dna in small samples b. to serve as a positive control against samples c. to cut sample dna into fragments d. to verify that no dna has contaminated the gel

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented. b)scientists had not completely finalized their results, which took 30 years. c)cigarettes were cheaply available and media channels were very inefficient. d)cigarette manufacturers were trying hard to bring an alternative into the market

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d

Difference between series and parallel circuits