B3 Humans and their environment

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What causes water pollution?
Toxic chemicals from industrial factories, fertiliser and pesticides from farm and also sewage
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What causes air pollution?
Smoke from particulates, or gases such as carbon dioxide which contributes to global warming or sulphates which cause acid rain
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What causes land pollution?
Pesticides and herbicides from farming, and also toxic chemicals
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Why does deforestation contribute to more carbon dioxide in the atmosphere?
The plants no longer absorb it, it no longer acts as a carbon sink and it is released when the forest burns or the vegetation rots
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What gases make up biogas?
Methane, carbon dioxide, water vapour, hydrogen and hydrogen sulfide
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Other cards in this set

Card 2

Front

What causes air pollution?

Back

Smoke from particulates, or gases such as carbon dioxide which contributes to global warming or sulphates which cause acid rain

Card 3

Front

What causes land pollution?

Back

Preview of the front of card 3

Card 4

Front

Why does deforestation contribute to more carbon dioxide in the atmosphere?

Back

Preview of the front of card 4

Card 5

Front

What gases make up biogas?

Back

Preview of the front of card 5

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