To measure the population of lake trout in a 250-hectare lake, 400 individual trout were netted and marked with a fin clip, then returned to the lake
The next week, the lake was netted again, and out of the 200 lake trout that were caught, 50 had fin clips. Using the mark-recapture estimate, the lake trout population size could be closest to which of the following?
A) 160
B) 200
C) 400
D) 1,600
E) 80,000
Answer: D
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Fill in the blank(s) with the appropriate word(s).
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a. due to aminoacylation b. due to degeneracy c. due to alternative splicing d. due to polyadenylation
Which of the following is considered a secondary or additional function of the urinary system?
A. excretion of metabolic wastes B. maintenance of acid-base balance C. secretion of hormones D. synthesis of vitamin D E. maintenance of water-salt balance
Birds are different from all other living vertebrates because they
A. are bipedal. B. lack teeth. C. have feathers. D. can fly.