You want to estimate the number of canvas backs (a type of duck) at the Sacramento Wildlife Refuge. In two days you capture 200
canvas backs, mark all of them and release them. One month later you capture another 200 canvas backs, of which 100 were marked by you last month. Calculate an estimate for the population size of canvas backs. A. 400
B. 100
C. 200
D. 300
E. 600
The right answer for the question that is being asked and shown above is that: "b. Archaeopteryx fossils share traits with both birds and reptiles." Scientists claim this is evidence of a common ancestor. <span>Archaeopteryx fossils show that the animal had feathers like a bird.</span>
