Ecology and the environment

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Created by: Ellie
Created on: 22-05-13 15:33

What does population mean?

All individuals of a particular species within a defined area

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What does community mean?

a group of different populations living in the same area

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What does Habitat mean?

the physical and chemical and biological environment in which an organism lives

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What does Ecosystem mean?

a community of living things and the environment in which they live

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Name the levels of a food chain in order

producer, primary consumer, secondary consumer

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How much energy is transferred from each trophic level?

10%

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Describe the carbon cycle

Co2 is exchanged between air and sea, plants remove CO2 from atmosphere, animals eat plants releasing C02 into the atmosphere, Humans burn fossil fuels releasing CO2, old animals and plants become fossil fuels, carbonates from seashells form limeston

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How does acid rain occur?

So2, CO2 and NO dissolve into the rain to form sulphuric acid, carbonic acid and nitric acid.

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Where is NO from?

burning fossil fuels

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Where is methane from?

cows and rice fields.

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Where are cfcs from?

aerosols

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Name the consequences of global warming?

ice caps melt, sea levels rise, extinction of species, climate change

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Describe Eutrophication

Nitrate enters water way from fields, causes algal bloom, blocks light for plants, plants respire, O2 levels fall and fish die. Bacteria decompose fish, bacteria respire. PH levels fall everything dies

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Other cards in this set

Card 2

Front

What does community mean?

Back

a group of different populations living in the same area

Card 3

Front

What does Habitat mean?

Back

Card 4

Front

What does Ecosystem mean?

Back

Card 5

Front

Name the levels of a food chain in order

Back

View more cards

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Ecology and the environment