Cycling materials (AQA GCSE Biology): Flashcards

Keeps fresh water moving around planet

Water turns to vapor; caused by sun's heat

Plants release water vapor through leaves

Water vapor cools and falls as rain or snow

Removes $CO_2$ from air, converts to carbon compounds

Releases $CO_2$ back into air

Releases $CO_2$, adds extra carbon to atmosphere

Breaks down dead organisms, releases $CO_2$

Plants absorb $CO_2$ via photosynthesis

Bacteria and fungi

Mineral ions like nitrates

To make amino acids for growth

Worms and beetles