A revision of some ecosistems and their characteristics. You can also review what a food chain is.
It was planned for 4th grade children who are studying in a school belonging to the Bilingual Project of the Autonomus Community of Madrid.
Download it in order to watch the videos, play the games and download the worksheets attached.
2. It’s a combination between a habitat
and its community of living things.
ECOSYSTEMS
Elements
Population
Habitat
It’s the place where living things
live.
They have different characteristics:
light, water, temperature and the
type of soil.
Community
It’s the living things of the
same species that live in the
same habitat.
It’s all the populations that
live in the same habitat.
Moss population
The River is the
habitat for:
Snake population
Frog population
Different types of ecosystems
Aquatic ecosystems
Terrestrial ecosystems
Mediterranean
forests
Deserts
Rainforests
Food chain
The river community
North and
South poles
Fresh water
ecosystems
Salt water
ecosystems
3. Terrestrial ecosystems
Mediterranean
forests
Deserts
Temperatures are mild.
It doesn’t rain a lot.
There are many plants and animals.
They are very hot and dry during
the day and very cold at night.
It barely rains.
There aren’t many plants or animals.
Rainforests
They are hot and wet.
It rains a lot.
Almost all the animals and plants
live there.
They are very cold.
North and
South poles
It snows a
everywhere.
lot.
There’s
ice
The animals are adapted to low
temperatures.
4. Aquatic ecosystems
river
Fresh water
ecosystems
They are rivers, ponds or lakes.
You can find animals, such as
frogs, fish or snakes. And plants
like moss, ferns or willow trees.
pond
Salt water
ecosystems
They are seas or oceans.
You can find animals, such as
dolphins, starfish or octopus. And
plants like algae or seaweeds.
ocean
5. Food chain
Producers
Living things eat and are eaten. They need each
other to obtain nutrients.
It’s made up of at least one producer, one
consumer and one decomposer.
They’re living things that produce
their own food.
Algae
Willow tree
Consumers
They’re living things that eat other
living things.
Some eat plants (herbivores); others
eat other animals (carnivores); and the
last ones eat plants and animals
(omnivores).
Deer
Frog
Decomposers
They’re living things that turn into
nutrients the remains of living things
that have died.
Amanita
Mushroom
6. Food chain
The grass uses sunlight
to
transform
water, minerals and
carbon dioxide into
food.
Fungi
turns
into
nutrient the remains of
the lion when it dies.
Decomposers
Producer
The lion eats the
antelope (carnivore).
Consumers
The antelope eats the
grass (herbivore).
Consumers
7. How are ecosystems damaged?
Forest fires.
Air pollution.
Water pollution.
Housing developments.
Caring for ecosystems
Fire prevention.
Controlling housing developments.
Making laws against dumping rubbish
and chemical waste.
Helping damaged
recover.
ecosystems
to
