Organisation of an Ecosystem (AQA GCSE Biology): Quizzes

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How Materials are Cycled
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Which organisms remove CO₂ from the atmosphere during photosynthesis?

Green plants and algae

What do plants and algae produce using carbon from CO₂?

Carbohydrates, proteins, and fats

How does carbon move through the food chain?

Animals eat plants and algae

Which process returns CO₂ to the atmosphere from living organisms?

Respiration

What are decomposers in the carbon cycle?

Bacteria and fungi

Besides CO₂, what do decomposers return to the soil?

Essential mineral ions

How does combustion return CO₂ to the atmosphere?

Burning wood and fossil fuels

When was the carbon in fossil fuels originally captured?

Millions of years ago

What causes water to evaporate in the water cycle?

Sun's energy heating water

What is transpiration?

Water evaporating from leaf surfaces

How do clouds form in the water cycle?

Water vapour rises, cools, and condenses

What are the three forms of precipitation mentioned?

Rain, snow, or hail

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