{ SST_Geog C7 U1... 2. Sandstone changes to quartzite under intense heat and pressure. What type of rock is quartzite? Give a reason to support your answer. (1 mark) 3. Define the term 'ecosystem'. (1 mark) 4. How do rivers change the earth's surface? (1 mark) 5. Answer the following questions in 40-50 words. (8 marks) a) Look at the images given below. Identify and describe two activities shown in the pictures that cause global warming.
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SST_Geog C7 U1... 2. Sandstone changes to quartzite under intense heat and pressure. What type of rock is quartzite? Give a reason to support your answer. (1 mark) 3. Define the term 'ecosystem'. (1 mark) 4. How do rivers change the earth's surface? (1 mark) 5. Answer the following questions in 40-50 words. (8 marks) a) Look at the images given below. Identify and describe two activities shown in the pictures that cause global warming.
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