Page 8 - 新思维科学活动用书8 样章

1.2 Gas exchange

1.2 Gas exchange

Exercise 1.2 Lung surface area and body mass

This exercise provides you with data about six different mammals. You will practise looking for
correlations in data, and suggesting explanations for the patterns that you find.

Focus

The table shows the body masses of six mammals. It also shows the total surface area of the air sacs
in the mammals’ lungs.

Mammal Body mass in g Total surface area of air sacs in m 2

human 80 000 70

mouse 20 0.1
rabbit 1000 8

rat 300 0.8

sheep 68 000 60
fox 20 000 40

1 The entries in the table above are not in a very helpful order.
Complete the table below by reorganising the entries in a way that makes it easier to see any

patterns in the data.

Mammal Body mass in g Total surface area of air sacs in m 2

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