What is the purpose of a control sample that is known to be from bighead carp in edna surveillance? a. to produce multiple banding patterns b. to amplify the dna in small samples c. to see if samples contain the target dna d. to identify each species of carp found

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s