1. Where is carbon found? 2. What gas in the atmosphere has carbon in it?3. What 3 things make up the tissues of all living things?4. What organisms make these substances by photosynthesis? What are

these organisms classed as?5. How do consumers get carbon?6. What do decomposers eventually break things into?7. How is carbon released into the air by organisms?8. Why do living things need carbon?9. What 2 things are humans doing to create more carbon in the

atmosphere?10.The amount of carbon dioxide in the atmosphere is

i________________, which is adding to the G___________ Effect, keeping the planet warm and adding to g__________ w_____________.

11.What are 2 examples of fossil fuels?12.What are two things we can do to decrease the amount of carbon

dioxide in the atmosphere?

CARBON CYCLE QUESTIONS!

Answers…1. In all living things – the main material in sugars, proteins and fats.2. Carbon dioxide3. Sugars, proteins, fats4. Green plants, producers5. By eating plants6. Eventually into carbon dioxide7. Respiration, as CO2

8. For the building of sugars, proteins and fats9. Rapid human population growth, increased combustion of fossil fuels (for

heat, electricity, petrol)10. Increasing, Greenhouse, global warming11. Coal, oil12. Plant more trees, car pooling (less petrol)……

NITROGEN CYCLE!Wherever there is an empty box, label it with

one of the following:Nitrogen in the atmosphere

Lightning makes nitratesEaten by animals

Nitrogen in plant proteinDecay by decomposers

DeathNitrogen in animal protein

Nitrogen-fixing bacteria in soil and on root nodulesOther soil bacteria

Nitrates in soil

NITROGEN CYCLE!

eaten by animals

deathdecay by

decomposers

nitrogen in the

atmosphere

lightning makes nitrates

nitrates in the soil

Nitrogen-fixing bacteria in soil and on

root nodules

Other soil bacteria

Nitrogen in animal protein

Nitrogen in plant protein

Divide paper into 3 bits:

1. What did you understand?2. What did you not understand?3. What did you find interesting?

Then put in the correct bag up the front….