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ecosystem
- what is an ecosystem?
- an ecosystem is a unit
made up of two parts
- living things (plants,
animals, bacteria).
- non-living surroundings or
environment - air, water, soil
and the climate (how warm
or wet it is).
- living things (plants,
animals, bacteria).
- an ecosystem is a unit
made up of two parts
- how big is an ecosystem?
- an
ecosystem is
any size you
study e.g.
- a pond
- a meadow
- a forest
- the Sahara desert
- the whole earth
- a meadow
- a pond
- each is a unit made up of living things
and a non-living environment.
- an
ecosystem is
any size you
study e.g.
- what is in the food chain?
- no.1 plants - using sunlight, carbon
dioxide from the air, and water and
nutrients from the soil, a plant can
produce everything it needs for
itself. So plants are called producers.
- no.2 a herbivore - e.g. a
caterpillar eats a plants
leaves.
- no.3 a insectivore - e.g.
a wood mouse eats a
caterpillar.
- no.4 a carnivore - e.g. a
fox eats the wood mouse.
- no.5 the animal dies.
- no.6 bacteria, insects, earth worms and
fungi eat away at the dead carcass.
- the dead animals give the soil
nutrients so plants can grow.
- the dead animals give the soil
nutrients so plants can grow.
- no.6 bacteria, insects, earth worms and
fungi eat away at the dead carcass.
- no.5 the animal dies.
- no.4 a carnivore - e.g. a
fox eats the wood mouse.
- no.3 a insectivore - e.g.
a wood mouse eats a
caterpillar.
- no.2 a herbivore - e.g. a
caterpillar eats a plants
leaves.
- no.1 plants - using sunlight, carbon
dioxide from the air, and water and
nutrients from the soil, a plant can
produce everything it needs for
itself. So plants are called producers.
- the 4 ecosystems
- 1. hot desert
- 2. Savanna
- 3. tropical rain forest
- between tropics of
cancer and capricorn
- between tropics of
cancer and capricorn
- 4. deciduous forest
- 2. Savanna
- 1. hot desert
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