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Where on the figure is the trachea?  Enter the corresponding letter for this structure.

Which cells in the alveoli produce surfactant?

This structure seals the nasopharynx during swallowing:

During a primary immune response this antibody …………………..is produced first; whereas this antibody …………….is the main antibody produced during a secondary response.

3.1 What were the three main forms of child labour during the Industrial Revolution. (1×2) (2)

Question 4: Refer to Source B and answer the questions that follow:

Question 5: Refer to Source C and answer the questions that follow: 

SECTION B: SOURCE BASED QUESTIONS Right-click on the button in order to view Sources A, B, C and D in a new tab.   

2.5 Which one of the following does not fit? The steam engine contributed to industrial advances by __________. (1)

Question 1: Match the columns: Match the description in Column B to the word/phrase in Column A.