Go to www.hoddereducation.co.uk/wideworldextras for a homework task on this subject.
F igure 1 is a line graph showing two sets of data along the y axis , carbon dioxide (CO2) in the atmosphere measured in parts per million (ppm) and average global temperature in degrees celsius (°C), and shows time on the x axis.
Your organisation does not have access to this article.
Sign up today to give your students the edge they need to achieve their best grades with subject expertise
Subscribe
