Cycling materials (AQA GCSE Biology Combined Science): Flashcards

Carbon and water

Heat turns water to vapour that rises to atmosphere

Plants release water vapour through leaves

Water vapour cools to form droplets/clouds

Water falls to Earth as rain or snow

Plants absorb $CO_2$ from air to make sugars

Living things release $CO_2$ when breaking down food for energy

Decomposers break down dead organisms and release $CO_2$

Burning fossil fuels releases stored carbon as $CO_2$

Bacteria and fungi