B1.6

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  • Created by: elisha.ks
  • Created on: 19-02-17 17:02
what do living things do in order to grow and do other processes
remove materials from the environment
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how are these materials returned to the environment
either in waste materials or when living things die and decay
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why do materials decay
because they are broken down (digested) by microorganisms
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what conditions do microorganisms digest materials faster in
warm, moist and aerobic
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what does the decay process release
substances that plants need to grow
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what happens in a stable community
the processes that remove materials are balanced by processes that return materials: materials are constantly cycled
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what happens in a compost bin
kitchen waste can be made into compost (decayed remains of animal/plant matter that can be used as fertiliser), so recycles the nutrients back into soil
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carbon cycle step 1
carbon dioxide is removed from the environment by green plants and algae for photosynthesis
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carbon cycle step 2
the carbon from the carbon dioxide is used to make carbohydrates, fats and proteins, which make up the body of plants and algae
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carbon cycle step 3
when green plants and algae respire, some of this carbon becomes carbon dioxide and is released into the atmosphere
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carbon cycle step 4
when green plants and algae are eaten by animals and these animals are eaten by other animals, some of the carbon becomes part of the fats and proteins that make up their bodies
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carbon cycle step 5
when animals respire some of this carbon becomes carbon dioxide and is released into the atmosphere
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carbon cycle step 6
when plants, algae and animals die, some animals and microorganisms feed on their bodies
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carbon cycle step 7
carbon is released into the atmosphere as carbon dioxide when these organisms respire
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carbon cycle step 8
by the time microorganisms and detritus feeders have broken down waste products and dead bodies of organisms in ecosystems and cycled the materials as plant nutrients, all energy originally absorbed by green plants and algae has been transferred
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carbon cycle step 9
combustion of wood and fossil fuels releases carbon dioxide into the atmosphere
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Other cards in this set

Card 2

Front

how are these materials returned to the environment

Back

either in waste materials or when living things die and decay

Card 3

Front

why do materials decay

Back

Preview of the front of card 3

Card 4

Front

what conditions do microorganisms digest materials faster in

Back

Preview of the front of card 4

Card 5

Front

what does the decay process release

Back

Preview of the front of card 5
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