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In this activity, learners test to see if carbon dioxide is present in the air we breathe in and out by using a detector made from red cabbage.

In this activity, learners will discover why there are holes in bread.

In this experiment, learners will explore whether increased carbon dioxide makes our oceans more basic or more acidic.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

In this activity, learners conduct an experiment to investigate the effect of elevated levels on CO2 on plant growth.