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* http://labspace.open.ac.uk/mod/oucontent/view.php?id=426185§ion=1.2.4 | * http://labspace.open.ac.uk/mod/oucontent/view.php?id=426185§ion=1.2.4 | ||
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=Teacher's Notes= | =Teacher's Notes= | ||
Science Book: living environment p. 56 | Science Book: living environment p. 56 | ||
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Q. Tell the story of the graphs; what do they show? | Q. Tell the story of the graphs; what do they show? | ||
Q. What factors might explain the changes in numbers over time? | Q. What factors might explain the changes in numbers over time? | ||