What is the correct interpretation of this figure? a. The average cost of adult

Question

What is the correct interpretation of this figure?

a. The average cost of adult birds for the incubation period is higher than for any other phase.

b. Adults spend the lowest percentage of the breeding cycle during the brooding period.

c. The energetic costs may be low during incubation but it represents the largest percentage of the breeding cycle.

What is the modal dive duration of the birds?

a. 120 seconds
b. Approximately 20 seconds
c. 7%
d. I can’t tell from this figure

What cumulative total percentage of dives are less than 60 seconds?

100 4000 80 O 3000 60 D 2000 40 O 20 1000 All Chk Stages Inc ne duc Brd Chk Reproductive Stage Fig. 1 The average cost per day and percentage of the total cycle duration (black line) for each breeding stage in wandering albatrosses at Crozet. The average cost for each stage (gray bars) and all stages combined (black bar) includes both time at sea and time on the nest for a breeding pair. The breeding cycle includes the incubation (Inc), chick- brooding (Brd), and chick-rearing (Chk) stages

Explanation / Answer

3. Adults spend the lowest percentage of the breeding cycle during the brooding period.

4. 7%

5. 3 - 5 mins

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