HSA 2008 Biology Item 15print

HSA 2008 Biology Item 15

CID
CID1e0c5d97cb75c392c42854b8fdba772b
itemNum
15
initialLetter
A
itemType
SR
itemAnswerKey
2
itemMaxScorePoints
1
origNum
23

Use the information and the graph below to answer the following item.

A group of students measured the volume of air they exhaled during three different activities: sitting, walking, and running. The volume of exhaled air is directly related to the amount of carbon dioxide produced. The data the students collected are summarized in the graph below.

According to the data, as physical activity increases, the amount of carbon dioxide produced

  1. decreases
  2. increases
  3. remains constant
  4. decreases, then increases

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