Nutrient Cycles

Question 1

What happens in the carbon cycle?

Answer 1

Photosynthesis- only way co2 is taken in during the cycle
Resp- plants, animals, bacteria, c6h12o6 + 6o2= 6co2+6h2o (resp)
Feeding-animals eat plants carbon is passed through the food chain
Decomposition- dead+waste(decay) decomposers release co2 (resp)
Combustion - burning fossil fuels release co2 ( fossilisation)
Growth- photo makes starch, protein fats- animals eat = growth

Question 2

What conditions have to be correct for decomposition to occur?

Answer 2

Suitable temp, soil pH, moisture, food, O2

Not have these conditions- no decomposition= fossilisation

Question 3

What causes global warming?

Answer 3

Burning fossil fuel
Deforestation
Leads to- climate change, polar caps melting, increase flooding and deserts

Question 4

What causes the greenhouse effect?

Answer 4

Rise in atmospheric co2
Slowed by alternative fuels and planting trees, less deforestation .
Plan for effects- flood barriers

Question 5

What are the stages in the hydrological cycle?

Answer 5

Evaporation- sea and reservoirs 
Condensation- clouds 
Precipitation- rain
Transpiration- trees
Water table- through flow, ground water flow, surface run off, interception